2019
26
3
0
165
1

Different operational alternatives of aquifer thermal energy storage system for cooling and heating of a residential complex under various climatic conditions in Iran
http://scientiairanica.sharif.edu/article_20323.html
10.24200/sci.2018.20323
1
In this research, a confined aquifer with low groundwater flow was considered to meet the cooling and heating requirement of residential complexes. The complexes were located in the cities of Ahvaz, Ardabil, Bandar Abbas, Esfahan, Kerman, Rasht, Tehran and Zahedan. The complex in Ardabil required mostly heating, the ones in Ahvaz and Bandar Abbas required mostly cooling, whereas the complex in other cities required both heating and cooling. Four different alternatives of aquifer thermal energy storage (ATES) were analyzed in this study. These alternatives were:1) using ATES alone for cooling 2) for cooling coupled with a conventional refrigeration system or a chiller 3) for heating by employing flat plate solar collectors and 4) for heating by employing flat plate solar collectors and a heat pump. Thermal energy recovery factor and the annual coefficient of performance (COP) of the alternatives were determined. The results showed that, for buildings located in cities with mild climatic conditions(such as Esfahan), where the annual heating and cooling energy requirements are early equal, the use of ATES is highly recommended when employing any of the alternatives considered in this investigation.
0

1281
1292


H.
Ghaebi
Department of Mechanical Engineering, University of Mohaghegh Ardabili, University Blv., Ardabil, P.O. Box 179, Iran.
Iran


M.N.
Bahadori
School of Mechanical Engineering, Sharif University of Technology, Azadi Ave., Tehran, P.O. Box 111559567, Iran.
Iran
bahadori@sharif.edu


M.H.
Saidi
School of Mechanical Engineering, Sharif University of Technology, Azadi Ave., Tehran, P.O. Box 111559567, Iran.
Iran
Aquifer thermal energy storage
climate
solar energy
heat pump
[1. Ghaebi, H., Bahadori, M.N., and Saidi, M.H. Economic and environmental evaluation of di_erent operation alternatives to aquifer thermal energy storage in Tehran, Iran", Scientia Iranica, Transactions B: Mechanical Engineering, 24, pp. 610623 (2017). 2. Meyer, C.F. and Todd, D.K. Heat storage wells", Water Well Journal, 10, pp. 3541 (1973). 3. Molz, F.J., Warman, J.C., and Jones, T.E. Aquifer storage of heated water: Part 1: A _eld experiment", Ground Water, 16, pp. 234241 (1978). 4. Papadopulos, S.S. and Larson, S.P. Aquifer storage of heated water: Part 2: numerical simulation of _eld results", Ground Water, 16, pp. 242248 (1978). 5. Parr, D.A., Molz, F.J., and Melville, J.G. Field determination of aquifer thermal energy storage parameters", Ground Water, 21, pp. 2235 (1983). 6. Andersson, O., Hellstrom, G., and Nordell, B. Heating and cooling with UTES in Swedencurrent situation and potential market development", International Proceedings of the 9th International Conference on Thermal Energy Storage, Warsaw, Poland, 1, pp. 359 366 (2003). 7. Sanner, B., Karytsas, C., Mendrinos, D., and Rybach, L. Current status of ground source heat pumps and underground thermal energy storage in europe", Geothermics, 32, pp. 579588 (2003). 8. Paksoy, H.O., Andersson, O., Abaci, S., Evliya, H., and Turgut, B. Heating and cooling of a hospital using solar energy coupled with seasonal thermal energy storage in an aquifer", Renewable Energy, 19, pp. 117 122 (2000). 9. Dickinson, J.S., Buik, N., Matthews, M.C., and Snijders, A. Aquifer thermal energy: Theoretical and operational analysis", Geotechnique, 59, pp. 249260 (2009). 10. Novo, V.A., Bayon, R.J., CastroFresno, D., and RodriguezHernandez, R. Review of seasonal heat storage in large basins: Water tanks and gravel water pits", Applied Energy, 87, pp. 390397 (2010). 11. Preene, M. and Powrie, W. Ground energy systems: Delivering the potential", Energy, 34, pp. 7784 (2009). 12. Umemiya, H. and Satoh, Y. A cogeneration system for a heavy snow fall zone based on aquifer thermal energy storage", Japanese Society of Mechanical Engineering, 13, pp. 757765 (1993). 13. Gao, Q., Li, M., Yu, M., Spitler, J.D., and Yan, Y.Y. Review of development from GSHP to UTES in China and other countries", Renewable Sustainable Energy Reviews, 13, pp. 13831394 (2009). 14. Kim, J., Lee, Y., Yoon, W.S., Jeon, J.S., Koo, M.H., and Keehm, Y. Numerical modeling of aquifer thermal energy storage system", Energy, 35, pp. 4955 4965 (2010). 15. Sommer, W., Valstar, J., Leusbrock, I., Grotenhuis, T., and Rijnaarts, H. Optimization and spatial pattern of largescale aquifer thermal energy storage", Applied Energy, 137, pp. 322337 (2015). 16. Jeon, J.S., Lee, S.R., Pasquinelli, L., and Fabricius, I.L. Sensitivity analysis of recovery e_ciency in hightemperature aquifer thermal energy storage with single well", Energy, 90, pp. 13491359 (2015). 17. Bloemendal, M., Olsthoorn, Th., and Boons, F. How to achieve optimal and sustainable use of the subsurface for aquifer thermal energy storage", Energy Policy, 66, pp. 104114 (2014). 18. Zeghicia, R.M., Essink., G.H.P.O., Hartogc, N., and Sommer, W. Integrated assessment of variable densityviscosity groundwater ow for a high temperature monowell aquifer thermal energy storage (HTATES) system in a geothermal reservoir", Geothermics, 55, pp. 5868 (2015). 19. Ghaebi, H., Bahadori, M.N., and Saidi, M.H. Parametric study of the pressure distribution in a con_ned aquifer employed for seasonal thermal energy storage", Scientia Iranica, Transactions B: Mechanical Engineering, 22, pp. 235244 (2015). 20. Yi, ZH. and Dong Ming, G. E_ect of cold energy storage of doubletwell aquifer thermal energy storage in Sanhejian coal mine", Energy Proceedings, 14, pp. 17301734 (2012). 21. Gao, Q., Zhou, X.Zh., Jiang, Y., Chen, X.L., and Yan, Y.Y. Numerical simulation of the thermal interaction between pumping and injecting well groups", Applied Thermal Engineering, 51, pp. 1019 (2013). 22. Paksoy, H.O., Gurbuz, Z., Turgut, B., Dikici, D., and Evliya, H. Aquifer thermal storage (ATES) for air conditioning of a supermarket in Turkey", Renewable Energy, 29, pp. 19911996 (2004). 23. Paksoy, H.O., Andersson, O., Abaci, S., Evliya, H., and Turgut, B. Heating and cooling of a hospital using solar energy coupled with seasonal thermal energy storage in an aquifer", Renewable Energy, 19, pp. 117 122 (2000). 24. Dincer, I. and Dost, S. A perspective on thermal energy storage system for solar energy applications", International Journal of Energy Research, 20, pp. 547 557 (1996). 25. Bauer, D., Marx, R., Lux, J.N., Ochs, F., Heidemann, W., and Steinhagen, H.M. German central solar heating plants with seasonal heat storage", Solar Energy, 84, pp. 612623 (2010). 26. Caliskan, H., Dincer, I., and Hepbasli, A. Thermodynamic analyses and assessments of various thermal energy storage systems for buildings", Energy Conversion and Management, 62, pp. 109122 (2012). 27. Vanhoudta, D., Desmedta, J., Van Baela, J., Robeynb, N., and Hoe, H. An aquifer thermal storage system in a Belgian hospital: Longterm experimental evaluation of energy and cost savings", Energy and Buildings, 43, pp. 36573665 (2011). 28. Ghaebi, H., Bahadori, M.N., and Saidi, M.H. Performance analysis and parametric study of thermal energy storage in an aquifer coupled with a heat pump", Applied Thermal Engineering, 62, pp. 156170 (2014). 29. Reveillerea, A., Hamm, V., Lesueur, H., Cordier, E., and Goblet, P. Geothermal contribution to the energy mix of a heating network when using aquifer thermal energy storage: Modeling and application to the paris basin", Geothermics, 47, pp. 6979 (2013). 30. Bakr, M., Oostrom, N., and Sommer, W. E_ciency of and interference among multiple aquifer thermal energy storage systems; A Dutch case study", Renewable Energy, 60, pp. 5362 (2013). 31. Kranz, S. and Frick, S. E_cient cooling energy supply with aquifer thermal energy storages", Applied Energy, 109, pp. 321327 (2013). 32. Hannani, S.K. Climate classi_cation in Iran", Technical Report, Sharif University of Technology, Tehran, Iran (2001) (In Persian). 33. Iran Meteorological Organization, http://www.irimo. ir (In Persian). 34. www.ssi.co.ir (Accessed 30 October 2016). 35. Bear, J., Dynamics of Fluids in Porous Media, Elsevier, Dover Publication Inc., pp. 450510 (1992). 36. Bejan, A., Convective Heat Transfer, McGraw Hill Press, New York (1997). 37. Schaetzle, W.J., Thermal Energy Storage in Aquifers, Design and Applications, Pergamon Press, Oxford, UK (1980).##]
1

Numerical investigation into thermal contact conductance between linear and curvilinear contacts
http://scientiairanica.sharif.edu/article_20170.html
10.24200/sci.2018.5238.1160
1
Heat transfer has considerable applications in different industries such as designing of heat exchanger, nuclear reactor cooling, control system for spacecraft and designing of microelectronics cooling. As the surfaces of two metals contact each other, this issue becomes so crucial. Thermal contact resistance is one of the key physical parameters in heat transfer of mentioned surfaces. Measuring the experimental value of thermal contact resistance in laboratory is highly expensive and difficult. As an alternative, numerical modeling methods could be engaged. In this study, Inverse problem method solution is utilized as a proper method for estimation of thermal contact resistance value. In this order, three different configurations (flatflat, flatcylinder, and cylindercylinder) were utilized in two steady and unsteady state conditions to predict the value of thermal contact resistance. In conclusion, the final results establish the fact that the inverse problem method solution can predict thermal contact resistance values between contacting surfaces.
0

1293
1298


M.H.
shojaeefard
School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.
Iran
makh136@yahoo.com


K.
Tafazzoli Aghvami
School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.
Iran
tafazzoli145a@yahoo.com
thermal contact resistance
thermal contact conductance
transient numerical simulation
curvilinear contact
interface interaction
[1. Kumar, S. and Tariq, A. Determination of thermal contact conductance of at and curvilinear contacts by transient approach", Exp. Therm. Fluid. Sci., 88, pp. 26176 (2017). 2. Shojaeefard, M.H. and Goudarzi, K. The numerical estimation of thermal contact resistance in contacting surfaces", Am. J. App. Sci., 5, pp. 156671 (2008). 3. Kumar, S. and Tariq, A. Steady state experimental investigation of thermal contact conductance between curvilinear contacts using liquid crystal thermography", Int. J. Therm. Sci., 118, pp. 5368 (2017). 4. Clausing, A.M. and Chao, B. Thermal contact resistance in a vacuum environment", J. Heat Transfer., 87, pp. 24350 (1965). 5. Marotta, E.E., Fletcher, L.S., and Dietz, T.A. Thermal contact resistance modeling of nonat, roughened surfaces with nonmetallic coatings", J. Heat Transfer., 123, pp. 1123 (2001). 6. Mikic, B. and Rohsenow, W. Thermal contact resistance", Technical Report No. 454241, Mech. Eng. Department, MIT (1966). 7. Thomas, T. and Sayles, R. Random process analysis of e_ects of waviness on thermal contact resistance", Therm. Phys. Heat Transfer. Conf. (1975). 8. Burghold, E., Frekers, Y., and Kneer, R. Determination of timedependent thermal contact conductance through IRthermography", Int. J. Therm. Sci., 98, pp. 14855 (2015). 9. Baran, I., Tutum, C.C., and Hattel, J.H. The e_ect of thermal contact resistance on the thermosetting pultrusion process", Comp. Part. B. Eng., 45, pp. 995 1000 (2013). 10. Tarantola, A., Inverse Problem Theory and Methods for Model Parameter Estimation, Society for Industrial and Applied Mathematics, Philadelphia (2005).##]
1

Impact of nonlinearity on bolt forces in multibolted joints: A case of the assembly stage
http://scientiairanica.sharif.edu/article_20320.html
10.24200/sci.2018.20320
1
This article concerns modeling, computation and analysis of multibolted joints in the assembly stage. The physical joint model is introduced as the assembly of the following three basic subsystems: a set of fasteners (bolts), a flexible joined flange and a contact layer between it and a rigid support. The finite element method (FEM) is used for modeling. Bolts are replaced by the bolt models of the spider type. The joined flange is modeled with spatial finite elements. As a model of the contact layer, the Winkler contact layer model is adopted. The truth of the theorem has been tested, according to which nonlinear characteristics of the contact layer may have an insignificant impact on computational final values of bolt preloads in the case of sequential tightening of the joint. The results of the calculations for the selected multibolted joint are given and compared with the experimental results. Conclusions of paramount importance to the engineering practice are comprised.
0

1299
1306


R.
Grzejda
Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Poland.
Poland
Multibolted joint
Nonlinearity
FEmodeling
Assembly stage
Preload
[1.Abid, M. Stress variation in the ange of a gasketed ange pipe joint during bolt up and operating conditions", Sci. Iran., 13(3), pp. 303309 (2006). 2. Ascione, F. A preliminary numerical and experimental investigation on the shear stress distribution on multirow bolted FRP joints", Mech. Res. Commun., 37(2), pp. 164168 (2010). 3. Tsiampousi, A., Yu, J., Standing, J., Vollum, R., and Potts, D. Behaviour of bolted cast iron joints", Tunn. Undergr. Sp. Tech., 68, pp. 113129 (2017). 4. Pal_astiKov_acs, B., Sipos, S., and B__r_o, S. The mysteries of the surface. First part: The characteristic features of the microgeometry of the machined surface", Acta Polytech. Hung., 11(5), pp. 524 (2014). 5. Wang, L., Liu, H., Zhang, J., and Zhao, W. Analysis and modeling for exible joint interfaces under micro and macro scale", Precision Engineering, 37(4), pp. 817824 (2013). 6. Abdo, J. Modeling of frictional contact parameters of mechanical systems", International Journal of Applied Mechanics and Engineering, 11(3), pp. 449465 (2006). 7. Grudzi_nski, K. and Kostek, R. An analysis of nonlinear normal contact microvibrations excited by a harmonic force", Nonlinear Dynam., 50(4), pp. 809 815 (2007). 8. Kostek, R. An analysis of the primary and superharmonic contact resonances  Part 2", J. Theor. Appl. Mech., 51(3), pp. 687696 (2013). 9. Misra, A. and Huang, S. E_ect of loading induced anisotropy on the shear behavior of rough interfaces", Tribol. Int., 44(5), pp. 627634 (2011). 10. Abid, M., Khan, A., Nash, D.H., Hussain, M., and Wajid, H.A. Simulation of optimized bolt tightening strategies for gasketed anged pipe joints", Procedia Engineer., 130, pp. 204213 (2015). 11. Abid, M. and Nash, D.H. Structural strength: Gasketed vs nongasketet ange joint under bolt up and operating condition", Int. J. Solids Struct., 43(1415), pp. 46164629 (2006). 12. Grzejda, R. Modelling nonlinear multibolted connections: A case of the assembly condition", 15th Int. Sci. Conf. Engrg for Rural Dev., Jelgava, Latvia, pp. 329 335 (2016). 13. Grzejda, R. Nonlinearity of the contact layer between elements joined in a multibolted connection and the preload of the bolts", Combustion Engines, 55(2), pp. 38 (2016). 14. B lachowski, B. and Gutkowski, W. E_ect of damaged circular angebolted connections on behaviour of tall towers, modelled by multilevel substructuring", Eng. Struct., 111, pp. 93103 (2016). 15. Hu, F., Shi, G., Bai, Y., and Shi, Y. Seismic performance of prefabricated steel beamtocolumn connections", J. Constr. Steel Res., 102, pp. 204216 (2014). 16. Kalogeropoulos, A., Drosopoulos, G.A., and Stavroulakis, G.E. Thermalstress analysis of a threedimensional endplate steel joint", Constr. Build. Mater., 29, pp. 619626 (2012). 17. Keikha, H. and Mo_d, M. On the assessment of a new steel bolted ush endplate beam splice connection", Sci. Iran. Trans. A, 24(4), pp. 17351750 (2017). 18. Esfahanian, A., MohamadiShooreh, M.R., and Mo_d, M. Assessment of the semirigid doubleangle steel connections and parametric analyses on their initial sti_ness using FEM", Sci. Iran., Trans. A, 22(6), pp. 20332045 (2015). 19. Sim~oes, R., Jord~ao, S., Diogo, J., and Fernandes, J. Development and design of a concealed splice joint con_guration between tubular sections", Eng. Struct., 137, pp. 181193 (2017). 20. Pavlovi_c, M., Markovi_c, Z., Veljkovi_c, M. and Bu¡evac, D. Bolted shear connectors vs. headed studs behaviour in pushout tests", J. Constr. Steel Res., 88, pp. 134149 (2013). 21. Li, Z., Soga, K., Wang, F., Wright, P., and Tsuno, K. Behaviour of castiron tunnel segmental joint from the 3D FE analyses and development of a new boltspring model", Tunn. Undergr. Sp. Tech., 41, pp. 176192 (2014). 22. Luan, Y., Guan, Z.Q., Cheng, G.D., and Liu, S. A simpli_ed nonlinear dynamic model for the analysis of pipe structures with bolted ange joints", J. Sound Vib., 331(2), pp. 325344 (2012). 23. Smolnicki, T., Derlukiewicz, D., and Sta_nco, M. Evaluation of load distribution in the superstructure rotation joint of singlebucket caterpillar excavators", Automat. Constr., 17(3), pp. 218223 (2008). 24. Aguirrebeitia, J., Abasolo, M., Avil_es, R., and de Bustos, I.F. General static loadcarrying capacity for the design and selection of four contact point slewing bearings: Finite element calculations and theoretical model validation", Finite Elem. Anal. Des., 55, pp. 2330 (2012). 25. Hammami, C., Balmes, E., and Guskov, M. Numerical design and test on an assembled structure of a bolted joint with viscoelastic damping", Mech. Syst. Signal Pr., 7071, pp. 714724 (2016). 26. Palenica, P., Powa lka, B., and Grzejda, R. Assessment of modal parameters of a building structure model", Springer Proceedings in Mathematics & Statistics, 181, pp. 319325 (2016). 27. Prinz, G.S., Nussbaumer, A., Borges, L., and Khadka, S. Experimental testing and simulation of bolted beamcolumn connections having thick extended endplates and multiple bolts per row", Eng. Struct., 59, pp. 434447 (2014). 28. Grzejda, R. New method of modelling nonlinear multibolted systems", In Advances in Mechanics: Theoretical, Computational and Interdisciplinary Issues, M. Kleiber, T. Burczy_nski, K. Wilde, J. G_orski, K. Winkelmann, L. Smakosz, Eds., pp. 213216, CRC Press, Leiden, Netherlands (2016). 29. Kim, J., Yoon, J.Ch., and Kang, B.S. Finite element analysis and modeling of structure with bolted joints", Appl. Math. Model., 31(5), pp. 895911 (2007). 30. Grzejda, R. Impact of nonlinearity of the contact layer between elements joined in a preloaded bolted ange joint on operational forces in the bolts", Mechanics and Mechanical Engineering, 21(3), pp. 541 548 (2017). 31. Ozgan, K. and Daloglu, A.T. Dynamic analysis of thick plates on elastic foundations using Winkler foundation model", Sci. Iran., Trans. A, 21(1), pp. 1118 (2014). 32. Grzejda, R., Witek, A., and Konowalski, K. Experimental investigations of an asymmetrical bolted connection loaded by an eccentric force" [Do_swiadczalne badania niesymetrycznego po l czenia wielo_srubowego obci _zonego mimo_srodowo], Przegl d Mechaniczny, 71(1), pp. 2127 (2012). 33. Kumakura, S. and Saito, K. Tightening sequence for bolted ange joint assembly", 2003 ASME Pressure Vessels and Piping Conference, Analysis of Bolted Joints, Cleveland, USA, pp. 916 (2003).##]
1

Sagittal range of motion of the thoracic spine using standing digital radiography: A throughout comparison with nonradiographic data reviewed from the literature
http://scientiairanica.sharif.edu/article_20503.html
10.24200/sci.2018.20503
1
Previous studies have measured thoracic range of motion (RoM) using either skinmounted devices or supine CTimaging and have reported quite different RoMs. Given the inherent shortcomings of measurements of vertebrae movements from the overlying skin, the present study aims to measure normal RoM of the thoracic spine in the sagittal plane using the upright digital radiography. Lateral radiographs of the thoracic spine were acquired from eight asymptomatic male subjects in upright standing and full forward flexion using a mobile Uarm digital radiographic system. Total (T1T12), upper (T1T6), and lower (T6T12) thoracic RoMs were measured. A throughout comparison with available skinbased measurements in the literature was carried out. Mean of total (T1T12) thoracic RoM was 22.5° (SD 4.1°), most of which was generated by the lower (T6T12) as compared to upper (T1T6) thoracic spine (15.5° versus 7.1°, p measurements suffer from the inter sensorskinvertebra movements and supine imaging techniques do not allow maximal trunk flexion, standing radiography remains as the goldstandard technique. Evaluation of thoracic spine RoM has implications in both patient discrimination for diagnosis and in biomechanical models for estimation of spinal loads
0

1307
1315


S. S.
Madinei
Department of Mechanical Engineering, Sharif University of Technology, Tehran, P.O. Box 111559567, Iran.
Iran


N.
Arjmand
Department of Mechanical Engineering, Sharif University of Technology, Tehran, P.O. Box 111559567, Iran.
Iran
Thoracic spine
Range of motion
Kyphosis (Cobb) angle
Digital radiography
Imaging
Biomechanical modelling
[1. Briggs, A.M., Bragge, P., Smith, A.J., Govil, D., and Straker, L.M. Prevalence and associated factors for thoracic spine pain in the adult working population: a literature review", Journal of Occupational Health, 51(3), pp. 177192 (2009). 2. Fouquet, N., Bodin, J., Descatha, A., Petit, A., RamondRoquin, A., Ha, C., and Roquelaure, Y. 188 thoracic spinal pain prevalence in the musculoskeletal disorders surveillance network of the French Pays de la Loire region", Occupational and Environmental Medicine, 71(Suppl 1), pp. A24A24 (2014). 3. Fouquet, N., Bodin, J., Descatha, A., Petit, A., Ramond, A., Ha, C., and Roquelaure, Y. Prevalence of thoracic spine pain in a surveillance network", Occupational Medicine, 65(2), pp. 122125 (2015). 4. Nohara, Y., Taneichi, H., Ueyama, K., Kawahara, N., Shiba, K., Tokuhashil, Y., Tani, T., Nakahara, S., and Iida, T. Nationwide survey on complications of spine surgery in Japan", Journal of Orthopaedic Science, 9(5), pp. 424433 (2004). 5. Theisen, C., van Wagensveld, A., Timmesfeld, N., Efe, T., Heyse, T.J., FuchsWinkelmann, S., and Schofer, M.D. Cooccurrence of outlet impingement syndrome of the shoulder and restricted range of motion in the thoracic spine  a prospective study with ultrasoundbased motion analysis", BMC Musculoskeletal Disorders, 11(1), p. 1 (2010). 6. Arjmand, N. and ShiraziAdl, A. Model and in vivo studies on human trunk load partitioning and stability in isometric forward exions", Journal of Biomechanics, 39(3), pp. 510521 (2006). 7. Arjmand, N., Plamondon, A., ShiraziAdl, A., Lariviere, C., and Parnianpour, M. Predictive equations to estimate spinal loads in symmetric lifting tasks", Journal of Biomechanics, 44(1), pp. 8491 (2011). 8. Arjmand, N., Plamondon, A., ShiraziAdl, A., Parnianpour, M., and Larivi_ere, C. Predictive equations for lumbar spine loads in loaddependent asymmetric oneand twohanded lifting activities", Clinical Biomechanics, 27(6), pp. 537544 (2012). 9. Tully, E.A. and Stillman, B.C. Computeraided video analysis of vertebrofemoral motion during toe touching in healthy subjects", Archives of Physical Medicine and Rehabilitation, 78(7), pp. 759766 (1997). 10. Mannion, A.F., Knecht, K., Balaban, G., Dvorak, J., and Grob, D. A new skinsurface device for measuring the curvature and global and segmental ranges of motion of the spine: reliability of measurements and comparison with data reviewed from the literature", European Spine Journal, 13(2), pp. 122136 (2004). 11. Troke, M., Moore, A.P., and Cheek, E. Reliability of the OSI CA 6000 spine motion analyzer with a new skin _xation system when used on the thoracic spine", Manual Therapy, 3(1), pp. 2733 (1998). 12. Hsu, C.J., Chang, Y.W., Chou, W.Y., Chiou, C.P., Chang, W.N., andWong, C.Y. Measurement of spinal range of motion in healthy individuals using an electromagnetic tracking device", Journal of Neurosurgery: Spine, 8(2), pp. 135142 (2008). 13. Willems, J.M., Jull, G.A., and Ng, J.F. An in vivo study of the primary and coupled rotations of the thoracic spine", Clinical Biomechanics, 11(6), pp. 311 316 (1996). 14. Hajibozorgi, M. and Arjmand, N. Sagittal range of motion of the thoracic spine using inertial tracking device and e_ect of measurement errors on model predictions", Journal of Biomechanics, 49(6), pp. 913 918 (2016). 15. White III, A.A., Panjabi, M.M., Clinical Biomechanics of the Spine, 2nd Ed. pp. 102103, Lippincott, Philadelphia, US (1990). 16. Morita, D., Yukawa, Y., Nakashima, H., Ito, K., Yoshida, G., Machino, M., Kanbara, S., Iwase, T., and Kato, F. Range of motion of thoracic spine in sagittal plane", European Spine Journal, 23(3), pp. 673678 (2014). 17. O'gorman, H. and Jull, G. Thoracic kyphosis and mobility: the e_ect of age", Physiotherapy Practice, 3(4), pp. 154162 (1987). 18. Brinckmann, P., Frobin, W., Biggemann, M., Hilweg, D., Seidel, S., Burton, K., Tillotson, M., Sandover, J., Atha, J., Quinnell, R., and Chiropractic, A.E.C. Quanti_cation of overload injuries to thoracolumbar vertebrae and discs in persons exposed to heavy physical exertions or vibration at the workplace: the shape of vertebrae and intervertebral discsstudy of a young, healthy population and a middleaged control group", Clinical Biomechanics, 9, pp. S3S83 (1994). 19. Frobin, W., Brinckmann, P., Leivseth, G., Biggemann, M., and Reiker_as, O. Precision measurement of segmental motion from exionextension radiographs of the lumbar spine", Clinical Biomechanics, 11(8), pp. 457465 (1996). 20. Briggs, A.M., Wrigley, T.V., Tully, E.A., Adams, P.E., Greig, A.M., and Bennell, K.L. Radiographic measures of thoracic kyphosis in osteoporosis: Cobb and vertebral centroid angles", Skeletal Radiology, 36(8), pp. 761767 (2007). 21. Harrison, D.E., Harrison, D.D., Cailliet, R., Janik, T.J., and Holland, B. Radiographic analysis of lumbar lordosis: centroid, Cobb, TRALL, and Harrison posterior tangent methods", Spine, 26(11), pp. e235e242 (2001). 22. Bernhardt, M. and Bridwell, K.H. Segmental analysis of the sagittal plane alignment of the normal thoracic and lumbar spines and thoracolumbar junction", Spine, 14(7), pp. 717721 (1989). 23. Edmondston, S.J., Christensen, M.M., Keller, S., Steigen, L.B., and Barclay, L. Functional radiographic analysis of thoracic spine extension motion in asymptomatic men", Journal of Manipulative and Physiological Therapeutics, 35(3), pp. 203208 (2012). 24. Gangnet, N., Dumas, R., Pomero, V., Mitulescu, A., Skalli, W., and Vital, J.M. Threedimensional spinal and pelvic alignment in an asymptomatic population", Spine, 31(15), pp. E507E512 (2006). 25. Gelb, D.E., Lenke, L.G., Bridwell, K.H., Blanke, K. and McEnery, K.W. An analysis of sagittal spinal alignment in 100 asymptomatic middle and older aged volunteers", Spine, 20(12), pp. 13511358 (1995). 26. Harrison, D.E., Cailliet, R., Harrison, D.D., and Janik, T.J. How do anterior/posterior translations of the thoracic cage a_ect the sagittal lumbar spine, pelvic tilt, and thoracic kyphosis?", European Spine Journal, 11(3), pp. 287293 (2002). 27. Jackson, R.P. and McManus, A.C. Radiographic analysis of sagittal plane alignment and balance in standing volunteers and patients with low back pain matched for age, sex, and size: A prospective controlled clinical study", Spine, 19(14), pp. 16111618 (1994). 28. Janssen, M.M., Vincken, K.L., van Raak, S.M., Vrtovec, T., Kemp, B., Viergever, M.A., Bartels, L.W., and Castelein, R.M. Sagittal spinal pro_le and spinopelvic balance in parents of scoliotic children", The Spine Journal, 13(12), pp. 17891800 (2013). 29. Vaz, G., Roussouly, P., Berthonnaud, E., and Dimnet, J. Sagittal morphology and equilibrium of pelvis and spine", European Spine Journal, 11(1), pp. 8087 (2002). 30. Vedantam, R., Lenke, L.G., Keeney, J.A., and Bridwell, K.H. Comparison of standing sagittal spinal alignment in asymptomatic adolescents and adults", Spine, 23(2), pp. 211215 (1998). 31. Vialle, R., Levassor, N., Rillardon, L., Templier, A., Skalli, W., and Guigui, P. Radiographic analysis of the sagittal alignment and balance of the spine in asymptomatic subjects", The Journal of Bone & Joint Surgery, 87(2), pp. 260267 (2005). 32. Perriman, D.M., Scarvell, J.M., Hughes, A.R., Ashman, B., Lueck, C.J., and Smith, P.N. Validation of the exible electrogoniometer for measuring thoracic kyphosis", Spine, 35(14), pp. E633E640 (2010). 33. Goh, S., Price, R.I., Leedman, P.J., and Singer, K.P. A comparison of three methods for measuring thoracic kyphosis: implications for clinical studies", Rheumatology, 39(3), pp. 310315 (2000). 34. Johnson, K.D., Kim, K.M., Yu, B.K., Saliba, S.A., and Grindsta_, T.L. Reliability of thoracic spine rotation rangeofmotion measurements in healthy adults", Journal of Athletic Training, 47(1), pp. 5260 (2012). 35. Gercek, E., Hartmann, F., Kuhn, S., Degreif, J., Rommens, P.M., and Rudig, L. Dynamic angular threedimensional measurement of multisegmental thoracolumbar motion in vivo", Spine, 33(21), pp. 2326 2333 (2008). 36. Voutsinas, S.A. and MacEwen, G.D. Sagittal pro_les of the spine", Clinical Orthopaedics and Related Research, 210, pp. 235242 (1986). 37. Bradford, D.S., Moe, J.H., and Winter, R.B. Kyphosis and postural roundback deformity in children and adolescents", Minnesota Medicine, 56(2), pp. 114120 (1973). 38. Fon, G.T., Pitt, M.J., and Thies Jr, A.C. Thoracic kyphosis: range in normal subjects", American Journal of Roentgenology, 134(5), pp. 979983 (1980). 39. Pearcy, M., Portek, I., and Shephard, J. Threedimensional xray analysis of normal movement in the lumbar spine", Spine, 9(3), pp. 294297 (1984). 40. Ignasiak, D., Ferguson, S.J., and Arjmand, N. A rigid thorax assumption a_ects model loading predictions at the upper but not lower lumbar levels", Journal of Biomechanics, 49(13), pp. 30743078 (2016).##]
1

Experimental study of the wedge effects on the performance of a hardchine planing craft in calm water
http://scientiairanica.sharif.edu/article_20607.html
10.24200/sci.2018.20607
1
In this paper, effects of a wedge on the performance of planing craft in calm water are experimentally investigated. Experiments are carried out on three different cases distinguished by the wedge type. The model, built of fiberglass, is a prismatic planing hull with deadrise angle of 24 degrees. Towing tests are conducted at different Froude numbers ranging from 0.21 to 2.1. The total trim angle, resistance, rise up at the CG as well as stern and bow, keel wetted length, chine wetted length, stagnation angle, and the length of stagnation line are measured. They are used to study the effect of installing a wedge on the performance as well as the effect of height on the hydrodynamic characteristics. Based on the observations made, it is concluded that, when the wedge is applied to the hull, the risk of model exhibiting instability diminishes, while total trim angle largely decreases, keel wetted length is enlarged, wetted surface becomes thinner, CG rise up is lowered, and the resistance is reduced. Moreover, experimental measurements and theoretical 2D+T theory are combined to bring deeper insight about physics of the flow and pressure distribution when a wedge is installed on the bottom of a planing hull.
0

1316
1334


P.
Ghadimi
Department of Marine Technology, Amirkabir University of Technology, Hafez Ave, No 424, Tehran, P.O. Box 158754413, Iran.
Iran
pghadimi@aut.ac.ir


S.M.
Sajedi
Department of Marine Technology, Amirkabir University of Technology, Hafez Ave, No 424, Tehran, P.O. Box 158754413, Iran.
Iran


S.
Tavakoli
Department of Marine Technology, Amirkabir University of Technology, Hafez Ave, No 424, Tehran, P.O. Box 158754413, Iran.
Iran
Experimental Study
Planing hull, Wedge, Performance, Calm water
Combination of Experimental and Theoretical studies
[1. Blount, D.L. and Codega, L.T. Dynamic stability of planing boats", Int. J. of Marine Technology, 29(1), pp. 412 (1992). 2. Katayama, T., Taniguchi, T., and Habara, K. Tank tests to estimate onset of dynamic instabilities of highspeed planing craft", 2th Int. Conf. Chesapeake Power Boat, Annapolis, MD, USA (2010). 3. De la Cruz, J.M., Aranda, J.M., Girson sierra, F., et al. Improving the comfort of a fast ferry", IEEE Control System Magazine, 24(2), pp. 4760 (2004). 4. Xi, H. and Sun, J. Vertical plane motion of high speed planing vessels with controllable transom aps: modeling and control", 16th Int. Triennial World Congress of International Federation of Automatic Control, Prague, Czech Republic (2005). 5. van Deyzen, A. Improving the operability of planing monohulls using proactive control", PhD Thesis, Delft TU, Delft, Netherlands (2014). 6. Savitsky, D. and Brown, P.W. Procedures for hydrodynamic evaluation of planning hulls in smooth and rough water", Int. J. of Marine Technology, 13(4), pp. 381400 (1976). 7. Millward, A. E_ect of wedges on the performance characteristics of two planing hulls", Int. J. of Ship Research, 20(4), pp. 224232 (1987). 8. Kara_ath, G. and Fisher, S. The e_ect of stern wedges on ship powering performance", Int. J. of Naval Engineers, 99(3), pp. 2738 (1987). 9. Wang, C.T. Wedge e_ect on planing hulls", Int. J. of Hydronautics, 14(4), pp. 122124 (1980). 10. Tsai, F. and Hwang, J.L. Study on the compound e_ects of interceptor with stern ap for two fast monohulls", Conference: Oceans '04 MTS/IEEE Techno Ocean '04 (2004). 11. Cumming, D., Pallard, R., Thornhill, E., Hally, D., and Dervin, M., Hydrodynamic Design of a Stern Flap Appendage for the HALIFAX Class Frigates, Mari Tech, Halifax, N.S (June 1416, 2006). 12. Jang, S.H., Lee, H.J., Joo, Y.R., Kim, J.J., and Chun, H.H. Some practical design aspects of appendages for passenger vessels", Int. J. of Naval Architecture and Ocean Engineering, 1, pp. 5056 (2009). 13. Steen, S., Alterskjar, S.A., Velgaard, A., and Aasheim, I. Performance of a planing craft with midmounted interceptor", 10th Int. Conf. on Fast Sea Transportation, Athens, Greece (2009). 14. Karimi, M.H., Seif, M.S., and Abbaspoor, M. An experimental study of interceptor's e_ectiveness on hydrodynamic performance of highspeed planing crafts", Polish Maritime Research, 20, pp. 2129 (2013). 15. Savitsky, D. Hydrodynamic design of planing hulls", Int. J. of Marine Technology, 1(1), pp. 7195 (1964). 16. Ikeda, Y., Yokmi, K., Hamaski, J., Umeda, N. and Katayama, T. Simulation of running attitudes and resistance of a highspeed craft using a database of hydrodynamic forces obtained by fully captive model experiments", 2th Int. Conf. on Fast Sea Transportation, Athens, Greece (1993). 17. Ghadimi, P., Tavakoli, S., Feizi Chakab, M.A., and Dashtimanesh, A. Introducing a particular mathematical model for predicting the resistance and performance of prismatic planing hulls in calm water by means of total pressure distribution", Int. J. of Naval Architecture and Marine Engineering, 12(2), pp. 7394 (2015). 18. Martin, M. Theoretical determination of porpoising instability of highspeed planing boat", Report No. 76 0068 David Taylor Naval Ship Research and Development Center (1976). 19. Xu, L. and Troesch, A.W. A study on hydrodynamic of asymmetric planing surfaces", 5th Int. Conf. on Fast Sea Transportation, Seattle, Washington, USA (1999). 20. Ghadimi, P., Tavakoli, S., Dashtimanesh, A., and Zamanian, R. Steady performance prediction of a heeled planing boat in calm water using asymmetric 2D+T model", Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 231(1), pp. 234257 (2016a). 21. Ghadimi, P., Loni, A., Nowruzi, H., Dashtimanesh, A., and Tavakoli, S. Parametric study of the e_ects of trim tabs on running trim and resistance of planing hulls", Int. J. of Advances in Shipping and Ocean Engineering, 3(1), pp. 112 (2014). 22. Taunton, D.J., Hudson, D.A., and Shenoi, R.A. Characteristics of a series of high speed hard chine planing hills Part 1: Performance in calm water", Int. J. of Small Craft Technology, 152(2), pp. B55B74 (2010). 23. Begovic, E. and Bertorello, C. Resistance assessment of warped hull form", Int. J. of Ocean Engineering, 56, pp. 2842 (2012). 24. Ma, W.J., Sun, H.B., Zou, J., and Zhaung, J.Y. Test studies of the resistance and seakeeping performance of trimaran planing hull", Polish Maritime Research, 22, pp. 2227 (2015). 25. Jiang, Y., Zou, J., Hu, A., and Yang, J. Analysis of tunnel hydrodynamic characteristics for planing trimaran by model test and numerical simulations", Int. J. of Ocean Engineering, 113, pp. 101110 (2016). 26. Kim, D.J., Kim, S.Y., You, Y.J., et al. Design of highspeed planing hulls for the improvement of resistance and seakeeping performance", Int. J. of Naval Archit Ocean Eng., 5, pp. 161177 (2013). 27. Seo, J., Chori, H.K., Jeong, U.C., et al. Model tests on resistance and seakeeping performance of wavepiercing highspeed vessel with spray rails", Int. J. of Naval Archit Ocean Eng., 8(5), pp. 442455 (2017). 28. Taunton, D.J., Hudson, D.A., and Shenoi, R.A. Characteristics of a series of high speed hard chine planing hills Part 2: Performance in waves", Int. J. of Small Craft Technology, 153(1), pp. B1B22 (2011). 29. Begovic, E., Bertorello, C., and Pennino, S. Experimental seakeeping assessment of a warped planing hull model series", Int. J. of Ocean Engineering, 83, pp. 115 (2014). 30. Judge, C.Q. and Judge, J.A. Measurement of hydrodynamic coe_cients on a planing Hull using forced roll oscillations", Int. J. of Ship Research, 57, pp. 112124 (2013). 31. Morabito, M.G. Prediction of planing hull side forces in yaw using slender body oblique impact theory", Int. J. of Ocean Engineering, 101, pp. 4757 (2015). 32. Morabito, M., Pavkov, M., Timmins, C., and Beaver, B. Experiments on directional stability of stepped planing hulls", Proceedings of the 4th Chesapeake Power Boat Symposium, Annapolis, MD, US (2014). 33. Katayama, T. Mechanism of porpoising instabilities for highspeed planing craft", Proceedings of the Sixth ISOPE Paci_c/Asia O_shore Mechanics Symposium (2004). 34. ITTC Recommended Procedures and Guidelines, 24th ITTC 7.502 0702.1 (2005). 35. Lee, E.J., Schleicher, C.C., Merrill, C.F., Fullerton, D.A., et al. Benchmark testing of generic prismatic planing hull (GPPH) for validation of CFD tools", In proceedings of the 30th American Towing Tank Conference (ATTC), Bethesda, Maryland (2017). 36. Lee, E., Fullerton, A., Geiser, L., Schleicher, C., et al. Experimental and computational comparisons of the R=V Athena in calm water", In Proceedings of the 31st Symposium on Naval Hydrodynamics, Monterey, CA, USA (2016). 37. Celano, T. The prediction of porpoising inception for modern planing craft", SNAME Transaction, 106, pp. 296292 (1998). 38. Katayama, T., Fujimoto, M., and Ikeda, Y. A study in transverse stability loss of planing craft at super high forward speed", In 9th Int. Conf. on Stability of Ships and Ocean Vehicles, Rio de Janerio, Brazil (2006). 39. Savitsky, D., DeLorme, M.F., and Datla, R. Inclusion of whisker spray drag in performance prediction method for highspeed planing hulls", Int. J. of Marine Technology, 44(1), pp. 3556 (2007). 40. Ghadimi, P., Tavakoli, S., Dashtimanesh, A., and Pirooz, A. Developing a computer program for detailed study of planing hull's spray based on Morabito's approach", Int. J. of Marine Science and Application, 13(4), pp. 402415 (2014). 41. Akers, R.H. Dynamic analysis of planing hulls in vertical plane", In Proceedings of the Society of Naval Architects and Marine Engineers, New England Section (1999). 42. Ghadimi, P., Tavakoli, S., and Dashtimanesh, A. Calm water performance of hardchine vessels in semiplaning and planing regimes", Polish Maritime Res., 23(4), pp. 2345 (2016). 43. Van Deyzen, A. A nonlinear mathematical model for motions of a planing monohull in head seas", 6th Int. Conf. on High Performance Marine Vehicles, Naples, Italy (2008). 44. Zarnick, E.E. A nonlinear mathematical model of motions of a planing boat in regular waves", Report No. 78/032, David Taylor Naval Ship Research and Development Center (1978). 45. Garme, K. and Rosen, A. Time domain simulations and fullscale trials on planing crafts in waves", Int. J. of Ship Building Progress, 50(3), pp. 177208 (2003). 46. Ghadimi, P., Tavakoli, S., and Dashtimanesh, A. Coupled heave and pitch motions of planing hulls at nonzero heel angle", Int. J. of Applied Ocean Research, 59, pp. 286303 (2016). 47. Haase, H., Sopron, J.P., and AbdelMaksoud, M. Numerical analysis of a planing boat in head waves using a 2D+T method", Int. J. of Ship Technology Research, 62(3), pp. 131139 (2015). 48. Sebastiani, L., Bruzzone, D., Gualeni, P., et al. A practical method for the prediction of planing craft motions in regular and irregular waves", 27th Int. Conf. on O_shore Mechanics and Arctic Engineering, Estoril, Portugal (2008). 49. Tavakoli, S., Ghadimi, P., Dashtimanesh, A., and Sahoo, P.K. Determination of hydrodynamic coe_cients related to roll motion of highspeed planing hulls", 13th Int. Conf. on Fast Sea Transportation, DC, USA (2015). 50. Ghadimi, P., Tavakoli, S., and Dashtimanesh, A. An analytical procedure for time domain simulation of roll motion of the warped planing hulls", Proceedings of the Institution of Mechanical Engineers, Part M: Int. J. of Engineering for the Maritime Environment, 230, pp. 600615 (2016). 51. Tavakoli, S., Ghadimi, P., and Dashtimanesh, A. A nonlinear mathematical model for coupled heave, pitch, and roll motions of a highspeed planing hull", Int. J. of Engineering Mathematics, 104, pp. 157194 (2017). 52. Ghadimi, P., Tavakoli, S., Dashtimanesh, A., and Taghikhani, P. Dynamic response of a wedge through asymmetric free fall in 2 degrees of freedom", Proceedings of the Institution of Mechanical Engineers Part M: Int. J. of Engineering for the Maritime Environment, Published Online, 233(1), pp. 229250 (2017). 53. Farsi, M. and Ghadimi, P. Finding the best combination of numerical schemes for 2D SPH simulation of wedge water entry for a wide range of deadrise angles", Int. J. of Naval Archit Ocean Eng., 6, pp. 638651 (2014). 54. Farsi, M. and Ghadimi, P. E_ect of at deck on catamaran water entry through smoothed particle hydrodynamics", Institution of Mechanical Engineering, Part M: Int. J. of Engineering for the Maritime Environment, Published Online, Marc, 230(2), pp. 267280 (2014). 55. Facci, A.L., Panciroli, R., Ubertini, S., and Por_ri, M. Assessment of PIVbased analysis of water entry problems through synthetic numerical datasets", Int. J. of Fluids and Structures, 55, pp. 484500 (2015). 56. Ghadimi, P., Feizi Chekab, M.A., and Dashtimanesh, A. A numerical investigation of the water impact of an arbitrary bow section", ISH Journal of Hydraulic Engineering, 19(3), 186195 (2013). 57. Shademani, R. and Ghadimi, P. Parametric investigation of the e_ects of deadrise angle and demihull separation on impact forces and spray characteristics of catamaran water entry", Int. J. of the Brazilian Society of Mechanical Sciences and Engineering, 39(6), pp. 19891999 (2017). 58. Shademani, R. and Ghadimi, P. Numerical assessment of turbulence e_ects on forces, spray parameters, and secondary impact in wedge water entry problem using kepsilon method", Int. J. of Scientia Iranica, published online, 24(1), pp. 223236 (2017). 59. Shademani, R. and Ghadimi, P. Asymmetric water entry of twin wedges with di_erent deadrises, heel angles, and wedge separations using _nite element based _nite volume method and VOF", Int. J. of Applied Fluid Mechanics, 10(1), pp. 353368 (2017). 60. Feizi Chekab, M.A., Ghadimi, P., and Farsi, M. Investigation of threedimensionality e_ects of aspect ratio on water impact of 3D objects using smoothed particle hydrodynamics method", Int. J. of the Brazilian Society of Mechanical Sciences and Engineering, 38(7), pp. 19871998 (2016). 61. Shademani, R. and Ghadimi, P. Estimation of water entry forces, spray parameters and secondary impact of _xed width wedges at extreme angles using _ nite element based _nite volume and volume of uid methods", Int. J. of Brodogradnja, 67(1), pp. 101124 (2017). 62. Farsi, M. and Ghadimi, P. Simulation of 2D symmetry and asymmetry wedge water entry by smoothed particle hydrodynamics method", Int. J. of the Brazilian Society of Mechanical Sciences and Engineering, 37(3), pp. 821835 (2017). 63. Ghadimi, P., Dashtimanesh, A., and Djeddi, S.R. Study of water entry of circular cylinder by using analytical and numerical solutions", Int. J. of the Brazilian Society of Mechanical Sciences and Engineering, 34(3), pp. 225232 (2015). 64. Korobkin, A.A. Secondorder Wagner theory of wave impact", Int. J. of Engineering Mathematics, 58(14), pp. 121139 (2007). 65. Ghadimi, P., Saadatkhah, A., and Dashtimanesh, A. Analytical solution of wedge water entry by using schwartzchristo_el conformal mapping", Int. J. of Modeling, Simulation and Scienti_c Computing, 2(3), pp. 337354 (2013). 66. Judge, C., Troesch, A.W., and Prelin, M. Initial water impact of a wedge at vertical and oblique angles", Int. J. of Eng. Math, 48, pp. 279303 (2004). 67. Ghadimi, P., Feizi Chekab, M.A., and Dashtimanesh, A. Numerical simulation of water entry of di_erent arbitrary bow sections", Int. J. of Naval Arch. Marine Eng., 11, pp. 117129 (2014). 68. Panciroli, R. and Por_ri, M. Evaluation of the pressure _eld on a rigid body entering a quiescent uid through particle image velocimetry", Exp. Fluids, 54, pp. 16301642 (2013). 69. Jalalisendi, M., Osma, S.J., and Por_ri, M. Threedimensional water entry of a solid body: a particle image velocimetry study", Int. J. of Fluids and Structures, 59, pp. 85102 (2015). 70. Jalalisendi, M., Shams, A., Panciroli, R., and Por_ri, M. Experimental reconstruction of threedimensional hydrodynamic loading in water entry problems through particle image velocimetry", Exp. Fluids, 56, pp. 117 (2015). 71. Shams, A., Jalalisendi, M., and Por_ri, M. Experiments on the water entry of asymmetric wedges using particle image velocimetry", Physics of Fluids, 27(2) (2015). DOI: 10.1063/1.4907745 72. Facci, A.L., Panciroli, R., Ubertini, S., and Por_ri, M. Assessment of PIVbased analysis of water entry problems through synthetic numerical datasets", Int. J. of Fluids and Structures, 55, pp. 484500 (2015). 73. Facci, A.L., Por_ri, M., and Ubertini, S. Threedimensional water entry of a solid body: A computational study", Int. J. of Fluids and Structures, 66, pp. 3653 (2016). 74. Tveitnes, T., FlailieClarke, A.C., and Varyani, K. An experimental investigation into the constant velocity water entry of wedgeshaped sections", Int. J. of Ocean Engineering, 35, pp. 14631478 (2016). 75. Wagner, H. The landing of seaplanes. Technical Rep", Technical Note 622, 254, NACA (1932). 76. Garme, K. Improved time domain simulation of planing hulls in waves by correction of neartransom lift", International Journal of Shipbuilding Progress, 52(3), pp. 201230 (2005). 77. Breslin, J.P. Chinesdry planing of slender hulls: A general theory applied to prismatic surfaces", Int. J. of Ship Research, 45(1), pp. 5972 (2001). 78. Ghadimi, P., Tavakoli, S., Dashtimanesh, A., and Zamanian, P. Steady performance prediction of a heeled planing boat in calm water using asymmetric 2D+T model", Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 231, pp. 234257 (2017).##]
1

Effect of several heated interior bodies on turbulent natural convection in enclosures
http://scientiairanica.sharif.edu/article_20588.html
10.24200/sci.2018.20588
1
In this study, turbulent natural convection in a square enclosure including one or four hot and cold bodies is numerically investigated in the range of Rayleigh numbers of . The shape of the internal bodies is square or rectangular with the same surface areas and different aspect ratios. In all cases, the horizontal walls of the enclosure are adiabatic and the vertical ones are isothermal. It is desired to investigate the influence of different shapes and arrangements of internal bodies on the heat transfer rate inside the enclosure with wideranging applications such as ventilation of buildings, electronic cooling and industrial coldbox packages. Governing equations including ReynoldsaveragedNavierStokes equations have been solved numerically with finite volume method and turbulence model in a staggered grid. The boundary condition for turbulence model is based on the standard wall function approach. Strongly implicit method is employed to solve the discretized systems of algebraic equations with a remarkable rate of convergence. The effects of several parameters such as distance between the bodies, aspect ratio and Rayleigh number on heat transfer rate have been investigated. The most change in heat transfer rate at high values of Rayleigh numbers is associated with alteration in distance between square bodies. Moreover, the horizontal installation of rectangular bodies with h/w = 1/3 is accompanied by a maximum reduction of heat transfer at low Rayleigh numbers. The present results have been compared with previous experimental and numerical works regarding enclosures with or without internal bodies and reasonable agreement is observed.
0

1335
1349


A.
NouriBorujerdi
School of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran
Iran
anouri@sharif.ir


F.
Sepahi
School of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran
Iran
Natural convection, enclosure, interior bodies
turbulent flow, numerical method
[1. Bowles, A. and Cheesewright, R. Direct measurements of the turbulence heat ux in a large rectangular air cavity", Experimental Heat Transfer, 2, pp. 5969 (1989). DOI: 10.1080/08916158908946354 2. Saury, D., Rouger, N, Djanna, F., and Penot, F. Natural convection in an air_lled cavity: Experimental results at large Rayleigh numbers", Int. Communications of Heat and Mass Transfer, 38, pp. 679687 (2011). DOI: 10.1016/j.icheatmasstransfer.2011.03.019 3. Dafa'Alla, A.A. and Betts, P.L. Experimental study of turbulent natural convection in a tall air cavity", Exp. Heat Transfer, 9, pp. 165194 (1996). DOI: 10.1080/08916159608946520 4. Betts, P.L. and Bokhari, I.H. Experiments on turbulent natural convection in an enclosed tall cavity", Int. J. of Heat and Fluid Flow, 21, pp. 675683 (2000). DOI: 10.1016/S0142727X(00)000333 5. Kirkpatrick, A.T. and. Bohn, M. An experimental investigation of mixed cavity natural convection in the high Rayleigh number regime", Int. J. of Heat and Mass Transfer, 29, pp. 6982 (1986). DOI: 10.1016/00179310(86)900359 6. Tian, Y.S. and Karayiannis, T.G. Low turbulence natural convection in an air _lled square cavity", Part I, Int. J. of Heat and Mass Transfer, 43, pp. 849866 (2000). DOI: 10.1016/S00179310(99)001994 7. Tian, Y.S. and Karayiannis, T.G. Low turbulence natural convection in an air _lled square cavity", Part II, Int. J. of Heat and Mass Transfer, 43, pp. 867884 (2000). DOI: 10.1016/S00179310(99)002008 8. Ampofo, F. and Karayiannis, T.G. Experimental benchmark data for turbulent natural convection in an air _lled square cavity", Int. J. of Heat and Mass Transfer, 46, pp. 35513572 (2003). DOI: 10.1016/S00179310(03)001479 9. Salat, J., Xin, S., Joubert, P., Sergent, A., Penot, F., and Le Qu_er_e, P. Experimental and numerical investigation of turbulent natural convection in a large air_lled cavity", Int. J. of Heat and Fluid Flow, 25, pp. 824832 (2004). DOI: 10.1016/j.ijheatuidow.2004.04.003 10. De Vahl Davis, G. Natural convection of air in a square cavity: a bench mark numerical solution", Int. J. for Numerical Methods in Fluids, 3, pp. 249264 (1983). DOI: 10.1002/d.1650030305 11. Hortmann, M. Peric, M., and Scheuerer, G. Finite volume multigrid prediction of laminar natural convection: Benchmark solutions", Int. J. for Numererical Methods in Fluids., 11, pp. 189207(1990). DOI: 10.1002/d.1650110206 12. Le Quere, P. Accurate solutions to the square thermally driven cavity at high Rayleigh number", Computers & Fluids, 20(1), pp. 2941 (1991). DOI: 10.1016/00457930(91)90025D 13. Phillips, T.N. Natural convection in an enclosed cavity", J. of Computational Physics, 54(3), pp. 365 381 (1984). DOI: 10.1016/00219991(84)901232 14. Launder, B.E. and Spalding, D.B. The numerical computation of turbulent ows", Computer Methods in Applied Mechanics and Engineering, 3, pp. 269289 (1974). DOI: 10.1016/00457825(74)900292 15. Ince, N.Z. and Launder, B.E. On the computation of buoyancydriven turbulent ows in rectangular enclosures", Int. J. of Heat and Fluid Flow, 10, pp. 110117 (1989). DOI: 10.1016/0142727X(89)900039 16. Jones, W.P. and Launder, B.E. The prediction of laminarization with a twoequation model of turbulence", Int. J. of Heat and Mass Transfer, 15, pp. 301314 (1972). DOI: 10.1016/00179310(72)900762 17. Henkes, R.A.W.M., Van Der Vlugt, F.F., and Hoogendoorn, C.J. Naturalconvection ow in a square cavity calculated with lowReynoldsnumber turbulence models", Int. J. of Heat and Mass Transfer, 34 pp. 377388 (1991). DOI: 10.1016/00179310(91)90258G 18. Barakos, G. and Mitsoulis, E. Natural convection ow in a square cavity revisited: laminar and turbulent models with wall functions", Int. J. for Numerical Methods in Fluids, 18, pp. 695719 (1994). DOI: 10.1002/d.1650180705 19. Chen, Q. Comparison of di_erent k " models for indoor air ow computations", Numer. Heat Transf. Part B Fundamental, 28, pp. 353369 (1995). DOI: 10.1080/10407799508928838 20. Trias, F.X., Gorobets, A., Soria, M., and Oliva, A. Direct numerical simulation of a di_erentially heated cavity of aspect ratio 4 with Rayleigh numbers up to 1011  Part I: Numerical methods and timeaveraged ow", Int. J. of Heat and Mass Transfer, 53, pp. 665673 (2010). DOI: 10.1016/j.ijheatmasstransfer.2009.10.026 21. Trias, F.X., Gorobets, A., Soria, M., and Oliva, A. Direct numerical simulation of a di_erentially heated cavity of aspect ratio 4 with Rayleigh numbers up to 1011  Part II: Heat transfer and ow dynamics", Int. J. of Heat and Mass Transfer, 53, pp. 674683 (2010). DOI: 10.1016/j.ijheatmasstransfer.2009.10.027 22. Hsieh, K.J. and Lien, F.S. Numerical modeling of buoyancydriven turbulent ows in enclosures", Int. J. of Heat and Fluid Flow, 25, pp. 659670 (2004). DOI: 10.1016/j.ijheatuidow.2003.11.023 23. Hanjali_c, K. and Vasi_c, S. Computation of turbulent natural convection in rectangular enclosures with an algebraic ux model", Int. J. of Heat and Mass Transfer, 36, pp. 36033624 (1993). DOI: 10.1016/0017 9310(93)901789 24. Dol, H.S., Hanjali_c, K., and Kenjere_s, S. A comparative assessment of the secondmoment di_erential and algebraic models in turbulent natural convection", Int. J. of Heat and Fluid Flow, 18, pp. 414 (1997). DOI: 10.1016/S0142727X(96)00149X 25. Craft, T.J., Gant, S.E., Gerasimov, A.V., Iacovides, H., and Launder, B.E. Development and application of wallfunction treatments for turbulent forced and mixed convection ows", Fluid Dynamics Research, 38, pp. 127144 (2006). DOI: 10.1016/j.uiddyn.2004.11.002 26. Ba_ri, A., Zarcopernia, E., and de Mar_a J.M.G. A review on natural convection in enclosures for engineering applications, The particular case of the parallelogrammic diode cavity", Applied Thermal Engineering, 63, pp. 304322 (2014). DOI: 10.1016/j.applthermaleng.2013.10.065 27. Ho, C.J., Chang, W.S., and Wang, C.C. Natural convection between two horizontal cylinders in an adiabatic circular enclosure", Transactions of ASME J. of Heat Transfer, 115. pp. 158165 (1993). DOI: 10.1115/1.2910642 28. Ho, C.J., Cheng, Y.T., and Wang, C.C. Natural convection between two horizontal cylinders inside a circular enclosure subjected to external convection", Int. J. of Heat and Fluid Flow, 15, pp. 299306 (1994). DOI: 10.1016/0142727X(94)900159 29. Ha, M.Y, Jung, M.J., and Kim, Y.S. Numerical study on transient heat transfer and uid ow of natural convection in an enclosure with a heat generating conducting body, Numerical Heat Transfer, Part A, 35, pp. 415433 (1999). 30. Ha, M.Y., Kim, I.K., Yoon, H.S., Yoon, K.S., Lee, J.R., Balachandar, S., and Chun, H.H. Two Dimensional and unsteady natural convection in a horizontal enclosure with a square body", Numerical Heat Transfer, Part A: Applications, 41, pp. 183210 (2002). DOI: 10.1080/104077802317221393 31. Oztop, H., Dagtekin, I., and Bahloul, A. Comparison of position of a heated thin plate located in a cavity for natural convection", Int. Commun. Heat Mass Transfer, 31, pp. 121132 (2004). DOI: 10.1016/S0735 1933(03)002070 32. Oztop, H. and Bilgen, E. Natural convection in di_erentially heated and partially divided square cavities with internal heat generation", Int. J. of Heat and Fluid Flow, 27, pp. 466475 (2006). DOI: 10.1016/j.ijheatuidow.2005.11.003 33. Kandaswamy, P., Lee, J., Abdul Hakeem, A.K., and Saravanan, S. E_ect of ba_ecavity ratios on buoyancy convection in a cavity with mutually orthogonal heated ba_es", Int. J. of Heat and Mass Transf., 51, pp. 18301837 (2008). DOI: 10.1016/j.ijheatmasstransfer.2007.06.039 34. Hakeem, A.K.A., Saravanan, S., and Kandaswamy, P. Buoyancy convection in a square cavity with mutually orthogonal heat generating ba_es", Int. J. of Heat and Fluid Flow., 29, pp. 11641173 (2008). DOI: 10.1016/j.ijheatuidow.2008.01.015 35. Lee, J.M., Ha, M.Y., and Yoon, H.S. Natural convection in a square enclosure with a circular cylinder at di_erent horizontal and diagonal locations", Int. J. of Heat and Mass Transfer, 53, pp. 59055919 (2010). DOI: 10.1016/j.ijheatmasstransfer.2010.07.043 36. Hussain, S.H. and Hussein, A.K. Numerical investigation of natural convection phenomena in a uniformly heated circular cylinder immersed in square enclosure _lled with air at di_erent vertical locations", Int. Communications in Heat and Mass Transfer, 37, pp. 11151126 (2010). DOI: 10.1016/j.icheatmasstransfer.2010.05.016 37. Bararnia, H., Soleimani, S., and Ganji, D.D. Lattice Boltzmann simulation of natural convection around a horizontal elliptic cylinder inside a square enclosure", Int. Communications of Heat and Mass Transfer, 38, pp. 14361442 (2011). DOI: 10.1016/j.icheatmasstransfer.2011.07.012 38. Park, Y.G., Ha, M.Y., Choi, C., and Park, J. Natural convection in a square enclosure with two inner circular cylinders positioned at di_erent vertical locations", Int. J. of Heat and Mass Transfer, 77, pp. 501518 (2014). DOI: 10.1016/j.ijheatmasstransfer.2014.05.041 39. Garoosi, F., Bagheri, G., and Talebi, F. Numerical simulation of natural convection of nanouids in a square cavity with several pairs of heaters and coolers (HACs) inside", Int. J. of Heat and Mass Transfer, 67, pp. 362376 (2013). DOI: 10.1016/j.ijheatmas stransfer. 2013.08.034 40. Garoosi, F. and Hoseininejad, F. Numerical study of natural and mixed convection heat transfer between di_erentially heated cylinders in an adiabatic enclosure _lled with nanouid", J. of Molecular Liquids, 215, pp. 117 (2016). DOI: 10.1016/j.molliq.2015.12.016 41. Patankar, S. and Spalding, D. A calculation procedure for heat, mass and momentum transfer in threedimensional parabolic ows", Int. J. of Heat and Mass Transfer, 15, pp. 17871806 (1972). DOI: 10.1016/00179310(72)900543 42. Stone, H.L. Iterative solution of implicit approximations of multidimensional partial di_erential equations", SIAM J. Numerical Analysis, 5(3), pp. 530558 (1968).##]
1

Effects of viscous dissipation and convective heating on convection ow of a secondgrade liquid over a stretching surface: An analytical and numerical study
http://scientiairanica.sharif.edu/article_20414.html
10.24200/sci.2018.20414
1
The effects of viscous dissipation and convective boundary condition on the twodimensional convective flow of a second grade liquid over a stretchable surface with suction/injection and heat generation are investigated. The governing partial differential equations are reduced into a dimensionless coupled system of nonlinear ordinary differential equations by appropriate similarity transformation. Then, they are solved analyticallyby homotopy analysis method (HAM) and by numerically with fourth order RungeKutta method with shooting technique. The HAM and numerical results of the local skin friction and local Nusselt number are compared for various emerging parameters. It is found that the momentum boundary layer thickness grows with rising the values of the viscoelastic parameter.
0

1350
1357


B.
Bhuvaneswari
Department of Mathematics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
India


S.
Eswaramoorthi
Department of Mathematics, Dr.N.G.P. Arts & Science College, Coimbatore 641048, Tamil Nadu, India.
Saudi Arabia


S.
Sivasankaran
Department of Mathematics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Saudi Arabia


S.
Rajan
Department of Mathematics, Erode Arts & Science College, Erode 638009, Tamil Nadu, India.
Saudi Arabia


A.
Saleh Alshomrani
Department of Mathematics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Saudi Arabia
second grade fluid
convective boundary
heat generation
suction/injection
viscous dissipation
[1. Cortell, R. E_ects of viscous dissipation and work done by deformation on the MHD ow and heat transfer of a viscoelastic uid over a stretching sheet", shape Physics Letters A, 357(45), pp. 298 305 (2006). 2. Shawaqfah, M.S., Damseh, R.A., Chamkha, A.J. and Zgoul, M. Forced convection Blasius ow of secondgrade viscoelastic uid", Int. J. Heat Tech., 25(1), pp. 145149 (2007). 3. Abel, M.S. and Mahesha, N. Heat transfer in MHD viscoelastic uid ow over a stretching sheet with variable thermal conductivity, nonuniform heat source and radiation", Appl. Math. Model., 32(10), pp. 19651983 (2008). 4. Ahmad, A. and Asghar, S. Flow of a second grade uid over a sheet stretching with arbitrary velocities subject to a transverse magnetic _eld", Appl. Math. Letters, 24(11), pp. 19051909 (2011). 5. Kecebas, A. and Yurusoy, M. Numerical solutions of unsteady boundary layer equations for a generalized second grade uid. J. Theor. Appl. Mech., 49(1), pp. 7182 (2011). 6. Khan, Y., Hussain, A., and Faraz, N. Unsteady linear viscoelastic uid model over a stretching/ shrinking sheet in the region of stagnation point ows", Scientia Iranica, 19(6), pp. 15411549 (2012). 7. Eswaramoorthi, S., Bhuvaneswari, M., Sivasankaran, S., and Rajan, S. E_ect of radiation on MHD convective ow and heat transfer of a viscoelastic uid over a stretching surface", Procedia Eng., 127, pp. 916923 (2015). 8. Mishra, S.R., Pattnaik, P.K., Bhatti, M.M. and Abbas, T. Analysis of heat and mass transfer with MHD and chemical reaction e_ects on viscoelastic uid over a stretching sheet", Indian J. Phys., 91(10), pp. 12191227 (2017). 9. Lee, J., Kandaswamy, P., Bhuvaneswari, M. and Sivasankaran, S. Lie group analysis of radiation natural convection heat transfer past an inclined porous surface", J. Mech. Sci. Tech., 22(9), pp. 1779 1784 (2008). 10. Beg, O.A., Uddin, M.J., Rashidi, M.M., and Kavyani, N. Doubledi_usive radiative magnetic mixed convective slip ow with Biot and Richardson number e_ects", J. Engin. Thermophys., 23(2), pp. 7997 (2014). 11. Ellahi, R., Bhatti, M.M., and Vafai, K. E_ects of heat and mass transfer on peristaltic ow in a nonuniform rectangular duct", Int. J. Heat Mass Transf., 71, pp. 706719 (2014). 12. Niranjan, H., Sivasankaran, S., and Bhuvaneswari, M. Analytical and numerical study on magnetoconvection stagnationpoint ow in a porous medium with chemical reaction, radiation, and slip e_ects", Mathe. Prob. Eng., Article ID 4017076, pp. 112 (2016). 13. Sheikholeslami, M. and Rashidi, M.M. Nonuniform magnetic _eld e_ect on nanouid hydrothermal treatment considering Brownian motion and thermophoresis e_ects", J. Braz. Soc. Mech. Sci. Eng., 38(4), pp. 11711184 (2016). 14. Sheikholeslami, M. and Bhatti, M.M. Forced convection of nanouid in presence of constant magnetic _eld considering shape e_ects of nanoparticles", Int. J. Heat Mass Transf., 111, pp. 10391049 (2017). 15. Chamkha, A.J. Hydromagnetic threedimensional free convection on a vertical stretching surface with heat generation or absorption", Int. J. Heat Fluid Flow, 20(1), pp. 8492 (1999). 16. Patil, P.M., Roy, S., and Chamkha, A.J. Double di_usive mixed convection ow over a moving vertical plate in the presence of internal heat generation and a chemical reaction", Turkish J. Eng. Envir. Sci., 33, pp. 193205 (2009). 17. Bhuvaneswari, M., Sivasankaran, S., and Kim, Y.J. Lie group analysis of radiation natural convection ow over an inclined surface in a porous medium with internal heat generation", J. Porous Media, 15(12), pp. 11551164 (2012). 18. Mukhopadhyay, S. and Layek, G.C. E_ects of variable uid viscosity on ow past a heated stretching sheet embedded in a porous medium in presence of heat source/sink", Meccanica, 47(4), pp. 863876 (2012). 19. Ganga, B., Saranya, S., Vishnu Ganesh, N., and Abdul Hakeem, A.K. E_ects of space and temperature dependent internal heat generation/absorption on MHD ow of a nanouid over a stretching sheet", J. Hydrodyn., 27(6), pp. 945954 (2015). 20. Kasmani, R.M., Sivasankaran, S., Bhuvaneswari, M., and Siri, Z. E_ect of chemical reaction on convective heat transfer of boundary layer ow in nanouid over a wedge with heat generation/absorption and suction", J. Appl. Fluid Mech., 9(1), pp. 379388 (2016). 21. Karthikeyan, S., Bhuvaneswari, M., Sivasankaran, S., and Rajan, S. Soret and Dufour e_ects on MHD mixed convection heat and mass transfer of a stagnation point ow towards a vertical plate in M. a porous medium with chemical reaction, radiation and heat generation", J. Appl. Fluid Mech., 9(3), pp. 14471455 (2016). 22. Hayat, T., Shehzad, S.A., Qasim, M., and Obaidat, S. Flow of a second grade uid with convective boundary conditions", Ther. Sci., 15(2), pp. S253 S261 (2011). 23. Makinde, O.D. Similarity solution for natural convection from a moving vertical plate with internal heat generation and a convective boundary condition", Ther. Sci., 15(1), pp. S137S143 (2011). 24. Shehzad, S.A., Alsaedi, A., and Hayat, T. Three dimensional ow of Je_ery uid with convective surface boundary conditions", Int. J. Heat Mass Transf., 55(1516), pp. 39713976 (2012). 25. Merkin, J.H. and Pop, I. The forced convection ow of a uniform stream over a at surface with a convective surface boundary condition", Commun. Nonlinear Sci. Numer. Simulat., 16(9), pp. 36023609 (2011). 26. Eswaramoorthi, S., Bhuvaneswari, M., Sivasankaran, S., and Rajan, S. Soret and Dufour e_ects on viscoelastic boundary layer ow, heat and mass transfer in a stretching surface with convective boundary condition in the presence of radiation and chemical reaction", Scientia Iranica B, 23(6), pp. 257586 (2016).##]
1

Optimized design of adaptable vibrations suppressors in semiactive control of circular plate vibrations
http://scientiairanica.sharif.edu/article_20417.html
10.24200/sci.2018.20417
1
Due to flexibility of thin plates, high amplitude vibrations are observed when they are subjected to severe dynamic loads. Due to the extensive application of circular plates in industry, attenuating the undesired vibrations is of foremost importance. In this paper, adaptable vibration suppressors (AVSs) as a semiactive control approach, are utilized to suppress the vibrations in a free circular plate; under the concentrative harmonic excitation. Using mode summation method, mathematical model of the hybrid system, including the plate and an arbitrary number of vibration suppressors is analyzed. By developing a complex multipleloops algorithm, optimum values for the AVSs’ parameters (stiffness and position) are achieved such that the plate deflection is comprehensively minimized. According to the results, AVSs act efficiently in suppressing the vibrations in resonance/nonresonance conditions. It is also observed that optimum AVSs reduce the plate deflection over a broad spectrum of excitation frequencies. Finally, since the algorithm is developed in a general user friendly style, AVSs’ design can be extended to other shapes of plates with various boundary conditions and excitations.
0

1358
1377


N.
Asmari Saadabad
Centre of Excellence in Design, Robotics & Automation, Department of Mechanical Engineering, Sharif University of Technology,
Tehran, Iran.
Iran


H.
Moradi
Centre of Excellence in Design, Robotics & Automation, Department of Mechanical Engineering, Sharif University of Technology,
Tehran, Iran.
Iran
hamedmoradi@sharif.edu


G.R.
Vossoughi
Centre of Excellence in Design, Robotics & Automation, Department of Mechanical Engineering, Sharif University of Technology,
Tehran, Iran.
Iran
Circular plates
Adaptable vibration suppressor
Semiactive control
Advanced algorithm
Optimal design
[1. Wang, Q., Shi, D., Liang, Q., and Shi, X. A uni_ed solution for vibration analysis of functionally graded circular, annular and sector plates with general bound1376 N. Asmari Saadabad et al./Scientia Iranica, Transactions B: Mechanical Engineering 26 (2019) 1358{1377 ary conditions", Composites Part B: Engineering, 88, pp. 264294 (2016). 2. Minkarah, I.A. and Hoppmann, W.H. Flexural vibrations of cylindrically aeolotropic circular plates", The Journal of the Acoustical Society of America, 36(3), pp. 470475 (1964). 3. Narita, Y. Natural frequencies of completely free annular and circular plates having polar orthotropy", Journal of Sound and Vibration, 92(1), pp. 3338 (1984). 4. Kang, W., Lee, N.H., Pang, S., and Chung, W.Y. Approximate closed form solutions for free vibration of polar orthotropic circular plates", Applied Acoustics, 66(10), pp. 11621179 (2005). 5. Leissa, A.W., Vibration of Plates, Vol. SP160. NASA, Washington, DC: US Government Printing O_ce (1969). 6. Leissa, A.W. Literature review: Survey and analysis of the shock and vibration literature: Recent studies in plate vibrations: 198185 Part I. Classical Theory", The Shock and Vibration Digest, 19(2), pp. 1118 (1987). 7. Yamaki, N. Inuence of large amplitudes on exural vibrations of elastic plates", ZAMMJournal of Applied Mathematics and Mechanics/Zeitschrift fur Angewandte Mathematik und Mechanik, 41(12), pp. 501510 (1961). 8. Kung, G.C. and Pao, Y.H. Nonlinear exural vibrations of a clamped circular plate", Journal of Applied Mechanics, 39(4), pp. 10501054 (1972). 9. Tobias, S.A. and Arnold, R.N. The inuence of dynamical imperfection on the vibration of rotating disks", Proceedings of the Institution of Mechanical Engineers, 171(1), pp. 669690 (1957). 10. Tobias, S.A. Free undamped nonlinear vibrations of imperfect circular disks", Proceedings of the Institution of Mechanical Engineers, 171(1), pp. 691715 (1957). 11. Williams, C.J.H. and Tobias, S.A. Forced undamped nonlinear vibrations of imperfect circular discs", Journal of Mechanical Engineering Science, 5(4), pp. 325 335 (1963). 12. Shi, X., Shi, D., Li, W.L., and Wang, Q. A uni_ed method for free vibration analysis of circular, annular and sector plates with arbitrary boundary conditions", Journal of Vibration and Control, 22(2), pp. 442456 (2016). 13. Sridhar, S., Mook, D.T., and Nayfeh, A.H. Nonlinear resonances in the forced responses of plates, Part II: asymmetric responses of circular plates", Journal of Sound and Vibration, 59(2), pp. 159170 (1978). 14. Ribeiro, P. and Petyt, M. Nonlinear free vibration of isotropic plates with internal resonance", International Journal of NonLinear Mechanics, 35(2), pp. 263278 (2000). 15. Ribeiro, P. and Petyt, M. Geometrical nonlinear, steady state, forced, periodic vibration of plates, part II: Stability study and analysis of multimodal response", Journal of Sound and Vibration, 226(5), pp. 9851010 (1999). 16. Wu, F., Liu, G.R., Li, G.Y., Cheng, A.G., and He, Z.C. A new hybrid smoothed FEM for static and free vibration analyses of ReissnerMindlin plates", Computational Mechanics, 54(3), pp. 865890 (2014). 17. Haterbouch, M. E_ects of the geometrically nonlinearity on the free and forced response of clamped and simply supported circular plates", PhD Thesis, Universite Mohammed VAgdal, Rabat (2003). 18. Haterbouch, M. and Benamar, R. Geometrically nonlinear free vibrations of simply supported isotropic thin circular plates", Journal of Sound and Vibration, 280(35), pp. 903924 (2005). 19. Liou, G.S. Vibrations induced by harmonic loadings applied at circular rigid plate on halfspace medium", Journal of Sound and Vibration, 323(12), pp. 257269 (2009). 20. Kerlin, R.L. Predicted attenuation of the platelike dynamic vibration absorber when attached to a clamped circular plate at a noncentral point of excitation", Applied Acoustics, 23(1), pp. 1727 (1988). 21. Snowdon, J.C. Platelike dynamic vibration absorbers", Journal of Engineering for Industry, 97(1), pp. 8893 (1975). 22. Kirk, C.L. and Leissa, A.W. Vibration characteristics of a circular plate with a concentric reinforcing ring", Journal of Sound and Vibration, 5(2), pp. 278284 (1967). 23. Azimi, S. Axisymmetric vibration of pointsupported circular plates", Journal of Sound and Vibration, 135(2), pp. 177195 (1989). 24. Kunukkasseril, V.X. and Swamidas, A.S.J. Vibration of continuous circular plates", International Journal of Solids and Structures, 10(6), pp. 603619 (1974). 25. Avalos, D.R., Larrondo, H.A., and Laura, P.A.A. Transverse vibrations of a circular plate carrying an elastically mounted mass", Journal of Sound and Vibration, 177(2), pp. 251258 (1994). 26. Ray, M.C. and Shivakumar, J. Active constrained layer damping of geometrically nonlinear transient vibrations of composite plates using piezoelectric _berreinforced composite", ThinWalled Structures, 47(2), pp. 178189 (2009). 27. Vidoli, S. and Dell'Isola, F. Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks", European Journal of MechanicsA/Solids, 20(3), pp. 435456 (2001). 28. Caruso, G., Galeani, S., and Menini, L. Active vibration control of an elastic plate using multiple piezoelectric sensors and actuators", Simulation Modelling Practice and Theory, 11(56), pp. 403419 (2003). 29. Wu, S.T., Chen, J.Y., Yeh, Y.C., and Chiu, Y.Y. An active vibration absorber for a exible plate boundarycontrolled by a linear motor", Journal of Sound and Vibration, 300(12), pp. 250264 (2007). 30. Qiu, Z.C., Zhang, X.M., Wu, H.X., and Zhang, H.H. Optimal placement and active vibration control for piezoelectric smart exible cantilever plate", Journal of Sound and Vibration, 301(35), pp. 521543 (2007). 31. Hu, Y.R. and Ng, A. Active robust vibration control of exible structures", Journal of Sound and Vibration, 288(12), pp. 4356 (2005). 32. Wiciak, J. Modelling of vibration and noise control of a submerged circular plate", Archives of Acoustics, 32(4(S)), pp. 265270 (2014). 33. Khorshidi, K., Rezaei, E., Ghadimi, A.A. and Pagoli, M. Active vibration control of circular plates coupled with piezoelectric layers excited by plane sound wave", Applied Mathematical Modelling, 39(34), pp. 1217 1228 (2015). 34. Ji, H., Qiu, J., Badel, A., and Zhu, K. Semiactive vibration control of a composite beam using an adaptive SSDV approach", Journal of Intelligent Material Systems and Structures, 20(4), pp. 401412 (2009). 35. Badel, A., Sebald, G., Guyomar, D., Lallart, M., Lefeuvre, E., Richard, C., and Qiu, J. Piezoelectric vibration control by synchronized switching on adaptive voltage sources: Towards wideband semiactive damping", The Journal of the Acoustical Society of America, 119(5), pp. 28152825 (2006). 36. Saadabad, N.A., Moradi, H., and Vossoughi, G.R. Semiactive control of forced oscillations in power transmission lines via optimum tuneable vibration absorbers: with review on linear dynamic aspects", International Journal of Mechanical Sciences, 87, pp. 163178 (2014). 37. Meirovitch, L., Principles and Techniques of Vibrations, (1), New Jersey: Prentice Hall (1997). 38. Xie, L., Qiu, Z.C., and Zhang, X.M. Vibration control of a exible clampedclamped plate based on an improved FULMS algorithm and laser displacement measurement", Mechanical Systems and Signal Processing, 75, pp. 209227 (2016).##]
1

Dynamic finite element analysis of shot peening process of 2618T61 aluminium alloy
http://scientiairanica.sharif.edu/article_20431.html
10.24200/sci.2018.5483.1302
1
Shot peening is one of the surface treatment processes usually used for the improvement of fatigue strength of metallic parts by inducing residual stress field in them. The evaluation of shot peening parameters experimentally is not only very complex but costly as well. An attractive alternative is the explicit dynamics finite element (FE) analysis having the capability of accurately envisaging the shot peening process parameters using a suitable material’s constitutive model and numerical technique. In this study, ANSYS/LSDYNA software was used to simulate the impact of steel shots of various sizes on 2618T61 aluminium alloy plate described with strain rate dependent elastoplastic material model. The impacts were carried out at various incident velocities. The effect of shot velocity and size on the induced compressive residual stress and plastic deformation were investigated. The results demonstrated that increasing the shot velocity and size yielded in an increase in plastic deformation of the aluminium target. However, as observed, the effect of shot velocity and size was small in magnitude on the target's subsurface compressive residual stress.
0

1378
1387


H.
Ullah
Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.
Pakistan
uhimayat@gmail.com


B.
Ullah
Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.
Pakistan
baseerullah@gmail.com


A.
Rauf
Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.
Pakistan
rauf123@yahoo.com


R.
Muhammad
Department of Mechanical Engineering, CECOS University of IT and Emerging Sciences, Peshawar, Pakistan.
Pakistan
riaz234@yahoo.com
Surface treatment
Finite Element Analysis
Residual stress
Plastic deformation
[1. Meguid, S.A., Shagal, G., Stranart, J.C., and Daly, J., Threedimensional dynamic _nite element analysis of shotpeening induced residual stresses", Finite Elem. Anal. Des, 31(3), pp. 179191 (1999). 2. Majzoobi, G., Azizi, R, and Nia, A.A. A threedimensional simulation of shot peening process using multiple shot impacts", J. of Mater. Proc. Tech., 164, pp. 12261234 (2005). 3. Hong, T., Ooi, J., and Shaw, B. A numerical simulation to relate the shot peening parameters to the induced residual stresses", Eng. Fail. Anal., 15(8), pp. 10971110 (2008). 4. Mann, P., Miao, H.Y. Gari_epy, A., L_evesque, M., and Chromik., R.R. Residual stress near single shot peening impingements determined by nanoindentation and numerical simulations", J. of Mater. Sci., 50(5), pp. 22842297 (2015). 5. Shukla, P.P., Swanson, P.T., and Page, C.J. Laser shock peening and mechanical shot peening processes applicable for the surface treatment of technical grade ceramics: A review", Proc Inst Mech Eng B J Eng Manuf., 228(5), pp. 639652 (2014). 6. Tang. L, Yao, C., Zhang, D., and Ren, J. Empirical modeling of compressive residual stress pro_le in shot peening TC17 alloy using characteristic parameters and sinusoidal decay function", Proc Inst. Mech. Eng. B. J. Eng. Manuf. (2016). 7. Marini, M., Fontanari, V., Bandini, M., and Benedetti, M. Surface layer modi_cations of microshotpeened Al7075T651: Experiments and stochastic numerical simulations", Surf. Coat. Technol, 321 (Supplement C), pp. 265278 (2017). 8. Jebahi, M., Gakwaya, A., L_evesque, J., Mechri, O., and Ba, K. Robust methodology to simulate real shot peening process using discretecontinuum coupling method", Int. J. of Mech. Sci., 107, pp. 2133 (2016). 9. AlObaid, Y.F. Threedimensional dynamic _nite element analysis for shotpeening mechanics", Comput. & Struct., 36(4), pp. 681689 (1990). 10. Meguid, S.A., Shagal, G., and Stranart, J. 3D FE analysis of peening of strainrate sensitive materials using multiple impingement model", Int. J. of Imp. Eng., 27(2), pp. 119134 (2002). 11. Kang, X., Wang, T., and Platts, J. Multiple impact modelling for shot peening and peen forming", Proc Inst Mech Eng B J Eng Manuf, 224(5), pp. 689697 (2010). 12. ElTobgy, M.S., Ng, E., and Elbestawi, M.A. Threedimensional elastoplastic _nite element model for residual stresses in the shot peening process", Proc Inst Mech Eng B J Eng Manuf, 218(11), pp. 1471 1481 (2004). 13. Bagherifard, S., Ghelichi, R., and Guagliano, M. Mesh sensitivity assessment of shot peening _nite element simulation aimed at surface grain re_nement", Surf. Coat. Technol, 243, pp. 5864 (2014). 14. Bhuvaraghan, B., Ma_eo, S.S.B., McCLain, R., Potdar, Y., and Prakash, O. Shot peening simulation using discrete and _nite element methods", Adv. in Eng. Soft., 41(12), pp. 12661276 (2010). 15. Chen, Z., Yang, F., and Meguid, S. Realistic _nite element simulations of archeight development in shotpeened almen strips", J. of Eng. Mater. and Tech., 136(4), p. 041002 (2014). 16. HassaniGangaraj, S.M., Cho, K.S., Voigt, H.J.L., Guagliano, M., and Schuh, C.A. Experimental assessment and simulation of surface nano crystallization by severe shot peening", Acta Mater., 97, pp. 105115 (2015). 17. Jiabin, Z., Shihong, L., Tianrui, W., Zhen, Z., andWei, Z. An evaluation on SP surface property by means of combined FEMDEM shot dynamics simulation", Adv. in Eng. Soft., 115 (Supplement C), pp. 283296 (2018). 18. Xiao, X., Tong, X., Goa, G., Zhao, R., Liu, Y., and Li, Y., Estimation of peening e_ects of random and regular peening patterns", J. of Mater. Proc. Tech., 254 (Supplement C), pp. 1324 (2018). 19. Tu, F., Delbergue, D., Miao, H., Klotz, T., Brochu, M., Bocher, and P., and Levesque, M. A sequential DEMFEM coupling method for shot peening simulation", Surf. Coat. Technol, 319 (Supplement C), pp. 200212 (2017). 20. MILHDBK5J  Metallic Materials and Elements for Aerospace Vehicle Structures, D.o.D. Handbook, Editor USA (2003). 21. Johnson, G.R. and Cook, W.H. A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures", in Proc. of the 7th Int. Sym. on Ballist., The Hague, The Netherlands, (1983). 22. Muhammad, R., Ahmed, Ullah, H., and Silberschmidt, V.V. Dynamic behaviour of _Ti15333 in ultrasonically assisted turning: Experimental and numerical analysis", Scientia Iranica, Transac. B: Mech. Eng., 24(6), pp. 29042914 (2017). 23. Hfaiedh, N., Peyre, P., Song, H., Popa, I., Ji, V., and Vignal, V. Finite element analysis of laser shock peening of 2050T8 aluminum alloy", Int. J. of Fatig., 70, pp. 480489 (2015). 24. ANSYS LSDYNA User's Guide Ver 16.0. (2016). 25. Shaw, K.D.L. Comparison between shot peening and surface nano crystallization and hardening processes", Mater. Sci. and Eng. A., 463, pp. 4653 (2007). 26. Mylonas, G.I. and Labeas, G. Numerical modelling of shot peening process and corresponding products: Residual stress, surface roughness and cold work prediction", Surf. Coat. Technol., 205(19), pp. 44804494 (2011). 27. Guagliano, M. Relating Almen intensity to residual stresses induced by shot peening: a numerical approach", J. of Mater. Proc. Tech, 110(3), pp. 277286 (2001).##]
1

Inuence of bladed and glazed entrance on the performance of solar air heater
http://scientiairanica.sharif.edu/article_20185.html
10.24200/sci.2018.5500.1308
1
The performance of a flat plate singlepass solar air heater (SAH) modified at the entrance region of the heater was experimentally investigated. The entrance region was covered with glass cover instead of steel cover. The aim of using glass at the entrance region is increasing the heating area exposed to solar irradiation. In addition, replacing the steel cover with glass reduces the shading effect occurred due to steel which decreases the temperature of the surface of the absorber and hence the outlet temperature of the air. Also, guide blades were placed in the entry region to ensure well air distribution on the absorber surface and hence enhancing the thermal performance of SAH. The modified SAH was compared with another one without air blades and without glass cover at the entrance. The experiments were performed at four air flow rates ranged from 0.013 kg/sec to 0.04 kg/sec. The modifications led to good enhancement in both the air temperature difference and the efficiency. The glazedbladed SAH showed a good improvement in the daily thermal efficiency by 6.72 % to 10.5 % over the conventional heater and by 2.16 % to 3.25 % over the glazed SAH.
0

1388
1399


A.E.
kabeel
Faculty of Engineering, Tanta University, Tanta, Egypt.
Egypt
kabeel6@hotmail.com


M.H.
Hamed
Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt.;
Higher Institute of Engineering and Technology, HIET, Kafrelsheikh, Egypt
Egypt
mofrehhh@yahoo.com


Z.M.
Omara
Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt.
Egypt
zm_omara@yahoo.com


A.W.
Kandeal
Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt.
Egypt
abdallah_wagih@yahoo.com
Singlepass solar air heater
Entrance region
Glass cover
Guide blades
Daily effciency
[1. Kabeel, A.E., Hamed, M.H., Omara, Z.M., and Kandeal, A.W. Solar air heaters: Design con_gurations, improvement methods and applications  A detailed review", Renew. Sustain. Energy Rev., 70, pp. 1189 1206 (2017). 2. Sharma, N., Bhat, I.K., and Grover, D. Optimization of a smooth at plate solar air heater using stochastic iterative perturbation technique", Sol. Energy, 85(9), pp. 23312337 (2011). 3. Baritto, M. and Bracamonte, J. A dimensionless model for the outlet temperature of a nonisothermal at plate solar collector for air heating", Sol. Energy, 86(1), pp. 647653 (2012). 4. Bracamonte, J. and Baritto, M. Optimal aspect ratios for nonisothermal at plate solar collectors for air heating", Sol. Energy, 97, pp. 605613 (2013). 5. Abdullah, A.S., Elsamadony, Y.A.F., and Omara, Z.M. Performance evaluation of plastic solar air heater with di_erent cross sectional con_guration", Appl. Therm. Eng., 121, pp. 218223 (2017). 6. Chabane, F., Moummi, N., and Benramache, S. Experimental study of heat transfer and thermal performance with longitudinal _ns of solar air heater", J. Adv. Res., 5(2), pp. 183192 (2014). 7. Alta, D., Bilgili, E., Ertekin, C., and Yaldiz, O. Experimental investigation of three di_erent solar air heaters: Energy and exergy analyses", Appl. Energy, 87(10), pp. 29532973 (2010). 8. Omojaro, A.P. and Aldabbagh, L.B.Y. Experimental performance of single and double pass solar air heater with _ns and steel wire mesh as absorber", Appl. Energy, 87(12), pp. 37593765 (2010). 9. Rai, S., Chand, P., and Sharma, S.P. An analytical investigations on thermal and thermohydraulic performance of o_set _nned absorber solar air heater", Sol. Energy, 153, pp. 2540 (2017). 10. Naphon, P. On the performance and entropy generation of the doublepass solar air heater with longitudinal _ns", Renew. Energy, 30(9), pp. 13451357 (2005). 11. Ho, C.D., Yeh, H.M., Cheng, T.W., Chen, T.C., and Wang, R.C. The inuences of recycle on performance of ba_ed doublepass atplate solar air heaters with internal _ns attached", Appl. Energy, 86(9), pp. 1470 1478 (2009). 12. Yeh, H.M. Upwardtype atplate solar air heaters attached with _ns and operated by an internal recycling for improved performance", J. Taiwan Inst. Chem. Eng., 43(2), pp. 235240 (2012). 13. Ho, C.D., Chang, H., Wang, R.C., and Lin, C.S. Performance improvement of a doublepass solar air heater with _ns and ba_es under recycling operation", Appl. Energy, 100, pp. 155163 (2012). 14. Priyam, A. and Chand, P. Thermal and thermohydraulic performance of wavy _nned absorber solar air heater", Sol. Energy, 130, pp. 250259 (2016). 15. Gao, W., Lin, W., Liu, T., and Xia, C. Analytical and experimental studies on the thermal performance of crosscorrugated and atplate solar air heaters", Appl. Energy, 84(4), pp. 425441 (2007). 16. Karim, M.A. and Hawlader, M.N.A. Performance investigation of at plate, vcorrugated and _nned air collectors", Energy, 31(4), pp. 452470 (2006). 17. ElSebaii, A.A., AboulEnein, S., Ramadan, M.R.I., Shalaby, S.M., and Moharram, B.M. Thermal performance investigation of double pass_nned plate solar air heater", Appl. Energy, 88(5), pp. 17271739 (2011). 18. Gawande, V.B., Dhoble, A.S., Zodpe, D.B., and Chamoli, S. Experimental and CFD investigation of convection heat transfer in solar air heater with reverse Lshaped ribs", Sol. Energy, 131, pp. 275295 (2016). 19. Hans, V.S., Saini, R.P., and Saini, J.S. Heat transfer and friction factor correlations for a solar air heater duct roughened arti_cially with multiple vribs", Sol. Energy, 84(6), pp. 898911 (2010). 20. Sharma, S.K. and Kalamkar, V.R. Experimental and numerical investigation of forced convective heat transfer in solar air heater with thin ribs", Sol. Energy, 147, pp. 277291 (2017). 21. Boulemtafesboukadoum, A., Benzaoui, A., and Nedjari, H.D. Comparative study of the e_ects of two types of ribs on thermal performance of solar air heaters", Sci. Iran., 24, pp. 24182428 (2017). 22. Handoyo, E.A. and Ichsani, D. Numerical studies on the e_ect of deltashaped obstacles' spacing on the heat transfer and pressure drop in vcorrugated channel of solar air heater", Sol. Energy, 131, pp. 4760 (2016). 23. Kulkarni, K., Afzal, A., and Kim, K. Multiobjective optimization of solar air heater with obstacles on absorber plate", Sol. Energy, 114, pp. 364377 (2015). 24. Yadav, S. and Kaushal, M. Exergetic performance evaluation of solar air heater having arc shape oriented protrusions as roughness element", Sol. Energy, 105, pp. 181189 (2014). 25. Pandey, N.K. and Bajpai, V.K. Experimental investigation of heat transfer augmentation using multiple arcs with gap on absorber plate of solar air heater", Sol. Energy, 134, pp. 314326 (2016). 26. Behura, A.K., Prasad, B.N., and Prasad, L. Heat transfer, friction factor, and thermal performance of three sides arti_cially roughened solar air heaters", Sol. Energy, 130, pp. 4659 (2016). 27. Prasad, B.N., Behura, A.K., and Prasad, L. Fluid ow and heat transfer analysis for heat transfer enhancement in three sided arti_cially roughened solar air heater", Sol. Energy, 105, pp. 2735 (2014). 28. Krishnananth, S.S. and Kalidasa Murugavel, K. Experimental study on double pass solar air heater with thermal energy storage", J. King Saud Univ.  Eng. Sci., 25(2), pp. 135140 (2012). 29. Alkilani, M.M., Sopian, K., Mat, S., and Alghoul, M.A. Output air temperature prediction in a solar air heater integrated with phase change material", Eur. J. Sci. Res., 27(3), pp. 333441 (2009). 30. Moradi, R., Kianifar, A., and Wongwises, S. Optimization of a solar air heater with phase change materials: Experimental and numerical study", Exp. Therm. Fluid Sci., (2017). doi: http://dx.doi.org/10.1016/ j.expthermusci .2017.07.011 31. Kabeel, A.E., Khalil, A., Shalaby, S.M., and Zayed, M.E. Improvement of thermal performance of the _nned plate solar air heater by using latent heat thermal storage", Appl. Therm. Eng., 123, pp. 546 553 (2017). 32. Kabeel, A.E., Khalil, A., Shalaby, S.M., and Zayed, M.E. Experimental investigation of thermal performance of at and vcorrugated plate solar air heaters with and without PCM as thermal energy storage", Energy Convers. Manag., 113, pp. 264272 (2016). 33. ElSebaii, A.A. and AlSnani, H. E_ect of selective coating on thermal performance of at plate solar air heaters", Energy, 35(4), pp. 18201828 (2010). 34. AboulEnein, S., ElSebaii, A.A., Ramadan, M.R.I., and ElGohary, H.G. Parametric study of a solar air heater with and without thermal storage for solar drying applications", Renew. Energy, 21(34), pp. 505 522 (2000). 35. Ramani, B.M., Gupta, A., and Kumar, R. Performance of a double pass solar air collector", Sol. Energy, 84(11), pp. 19291937 (2010). 36. Dissa, A.O., Ouoba, S., Bathiebo, D., and Koulidiati, J. A study of a solar air collector with a mixed 'porous' and 'nonporous' composite absorber", Sol. Energy, 129, pp. 156174 (2016). 37. Chouksey, V.K. and Sharma, S.P. Investigations on thermal performance characteristics of wire screen packed bed solar air heater", Sol. Energy, 132, pp. 591605 (2016). 38. Prasad, S.B., Saini, J.S., and Singh, K.M. Investigation of heat transfer and friction characteristics of packed bed solar air heater using wire mesh as packing material", Sol. Energy, 83(5), pp. 773783 (2009). 39. Zheng, W., Zhang, H., You, S., Fu, Y., and Zheng, X. Thermal performance analysis of a metal corrugated packing solar air collector in cold regions", Appl. Energy, 203, pp. 938947 (2017). 40. Bayrak, F., Oztop, H.F., and Hepbasli, A. Energy and exergy analyses of porous ba_es inserted solar air heaters for building applications", Energy Build., 57, pp. 338345 (2013). 41. Karsli, S. Performance analysis of newdesign solar air collectors for drying applications", Renew Energy, 32(10), pp. 16451660 (2007). 42. Holman, J.P., Experimental Method for Engineers, 8th Edn., p. 64, McGrawHill (2012). 43. Srithar, K. and Mani, A. Studies on solar at plate collector evaporation systems for tannery e_uent (soak liquor)", Journal of Zhejiang UniversityScience A, 7(11), pp. 18701877 (2006).##]
1

Effects of welding parameters on penetration depth in mild steel ATIG welding
http://scientiairanica.sharif.edu/article_20145.html
10.24200/sci.2018.20145
1
ATIG welding is a welding method in which TIG welding is conducted by covering a thin layer of activating flux on the weld bead beforehand. The most benefit of this process is the gain in weld penetration depth. ATIG welds were produced on mild steel plates with TiO2 flux. The emphasis of this paper lies in introducing the effects of various process parameters (welding current, welding speed, powder/acetone ratio of the flux, arc length and electrode angle) in mild steel ATIG welding. The weld penetration depth was the measured metallographically. An optimum value was determined for each welding parameter.
0

1400
1404


M.
Kurtulmuş
Marmara University, Applied Science High School, Istanbul, Turkey.
Turkey
ATIG welding parameters
Mild steel ATIG welding
ATIG flux
ATIG flux solvent
ATIG flux compositions
[1. Ahmed, N., New Developments in Advanced Welding, Woodhead Publishing Limited, Abington (2005). 2. Choudhary, S. and Duhan, R. E_ect of activated ux on properties of SS 304 using TIG welding", Inter. J. Eng. Trans. B., 28, pp. 290295 (2015). 3. Azevedoa, A.G.L., Ferraresia, V.A.J., and Farias, J.P. Ferritic stainless steel welding with the ATIG process", Weld. Inter., 24, pp. 571578 (2010). 4. Fan, D., Zhang, R., Gu, Y., and Ushio, M. E_ect of ux on ATIG welding of mild steels", Trans. Join. Weld. Res. Ins., 30, pp. 3540 (2001) 5. Pan, W. and Shi, K. Research on the e_ects of technical parameters on the molding of the weld by ATIG welding", Trans. Join. Weld. Res. Ins., 40, pp. 379 (2011) 6. Cheng, H.K., Tseng, K.T., and Chou, C.P. E_ect of activated TIG ux on performance of dissimilar welds between mild steel and stainless steel", Key Eng. Mater., 479, pp. 7480 (2011) 7. Vikesh, P., Randhawa, J., and Suri, N.M. E_ect of ATIG welding process parameters on penetration in mild steel plates", Int. J. Mecha. Indust. Eng., 3, pp. 22312247 (2013). 8. Tathgir, S., Bhattacharya, A., and Bera, T.K. Inuence of current and shielding gas in TiO2 ux activated TIG welding on di_erent graded steels", Mater. Manuf. Proces., 30, pp. 1115112 (2015). 9. Singh, E.B. and Simgh, E.A. Performance of activated TIG process in mild steel welds", J. Mecha. Civil Eng., 12, pp. 15 (2015). 10. Tathgir, S. and Bhattacharya, A. ActivatedTIG materials and manufacturing processes welding of different steels: Inuence of various ux and shielding gas", Mater. Manuf. Proces. J., 31, pp. 335342 (2016). 11. Cary, H.B. and Helzer, S., Modern Welding Technology, 6th Edn., Prentice Hall, NewYork (2004). 12. Akka_s, N., Ferik, E., _Ilhan, E. and Aslanlar, S. The e_ect of welding current on nugget sizes in resistance spot welding of SPAC steel sheets used in railway vehicles", 130, pp. 142 (2016). 13. Kumar, R. and Bharathi, S. A review study on ATIG welding of 316(L) austenitic stainless steel", International Journal of Emerging Trends in Science and Technology, 2, pp. 20662072 (2015). 14. Zhang, J.R., Pan, H.I., and Katayama, S. The mechanism of penetration increase in ATIG welding", Frontiers Mater. Sci., 5, pp. 109118 (2011). 15. Berthier, A., Paillard, P., Carin, M., Valensi, F., and Pellerin, S. TIG and ATIG welding experimental investigations and comparison to simulation. Part 1: Identi_cation of Marangoni e_ect", Sci. Technol. Weld. Join., 17, pp. 609615 (2012). 16. Zhao, Y., Shi, Y., and Lei, Y. The study of surfaceactive element oxygen on ow patterns and penetration in ATIG welding", Metall. Mater. Trans. B, 37, pp. 485493 (2006). 17. Xu, Y.L., Dong, Z.B., Wei, Y.H., and Yang, C.L. Marangoni convection and weld shape variation in ATIG welding process", Theo. App. Fract. Mecha., 48, pp. 178186 (2007). 18. Ruckert, G., Huneau, B., and Marya, S. Optimizing the design of silica coating for productivity gains during the TIG welding of 304L stainless steel", Mater. Des., 28, pp. 23872393 (2007). 19. Modenesi, P.J., Neto, P.C., Apolinario, E.R., and Dias, K.B. E_ect of ux density and the presence of additives in ATIG welding of austenitic stainless steel", Weld. Inter., 29, pp. 425432 (2015). 20. Maduraimuthu, V., Vasudevan, M., Muthupandi, V., Bhaduri, A.K., and Jayakumar, T. E_ect of activated ux on the microstructure, mechanical properties, and residual stresses of modi_ed 9Cr1Mo steel weld joints", Metall. Mater. Trans. B., 43, pp. 123132 (2012). 21. Zhang, Z.D., Liu, L.M., Shen, Y., and Wang, L. Welding of magnesium alloys with activating ux", Sci. Techno. Weld. Join., 10, pp. 737743 (2005). 22. Shyu, S.W., Huang, H.Y., Tseng, K.H., and Chou, C.P. Study of the performance of stainless steel ATIG welds", J. Mater. Eng. Perfor., 7, pp. 193201 (2008). 23. Hiraoka, K., Okada, A., and Inagaki, M. E_ect of electrode geometry on maximum arc pressure in GTA weldments", J. Japan. Weld. Soci., 3, pp. 1016 (1985).##]
1

Numerical simulation of thermal radiative heat transfer effects on Fe3O4ethylene glycol nano uid EHD ow in a porous enclosure
http://scientiairanica.sharif.edu/article_20207.html
10.24200/sci.2018.5567.1348
1
Electrohydrodynamic Fe3O4 Ethylene glycol nanofluid forced convection is simulated in existence of thermal radiation. The porous lid driven cavity has one moving positive electrode. Single phase model has been applied to simulate nanofluid behavior. Control Volume based Finite Element Method is employed to obtain the results which are the roles of Darcy number , radiation parameter , Reynolds number , nanofluid volume fraction and supplied voltage . Results depict that maximum values for temperature gradient is obtained for platelet shape nanoparticles. Nusselt number enhances with rise of Darcy number and supplied voltage. Convection mode enhances with increase of permeability of porous media and nanofluid volume fraction but it decreases with rise of Hartmann number.
0

1405
1414


M.
Sheikholeslami
Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran.
Iran
m.sheikholeslami@stu.nit.ac.ir


D.D.
Ganji
Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran.
Iran
ddg_davood@yahoo.com


Z.
Li
School of Engineering, Ocean University of China, Qingdao 266110, China.;School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522,Australia.
China
zhixiongli@cumt.edu.cn


R.
Hosseinnejad
Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran.
Iran
r.hosseinnejad@nit.ac.ir
Electric field
Shape of nanoparticles
Nanofluid
porous media
thermal radiation
[1. Monajjemi Rarani, E., Etesami, N., and Nasr Esfahany, M. Inuence of the uniform electric _eld on viscosity of magnetic nanouid (Fe3O4EG)", Journal of Applied Physics, 112, p. 094903 (2012). Doi: 10.1063/1.4763469 2. Sheikholeslami, M. and Rokni, H.B. Simulation of nanouid heat transfer in presence of magnetic _eld: A review", International Journal of Heat and Mass Transfer, 115, pp. 12031233 (2017). 3. Sheikholeslami, M. and Ganji, D.D. Inuence of electric _eld on Fe3O4water nanouid radiative and convective heat transfer in a permeable enclosure", Journal of Molecular Liquids, 250, pp. 404412 (2018). 4. Sheikholeslami, M. and Ellahi, R. Three dimensional mesoscopic simulation of magnetic _eld e_ect on natural convection of nanouid", International Journal of Heat and Mass Transfer, 89, pp. 799808 (2015). 5. Sheikholeslami, M. and Ganji, D.D. Magnetohydrodynamic ow in a permeable channel _lled with nanouid", Scientia Iranica, B21(1), pp. 203212 (2014). 6. Sheikholeslami, M. and Shehzad, S.A. Thermal radiation of ferrouid in existence of Lorentz forces considering variable viscosity", International Journal of Heat and Mass Transfer, 109, pp. 8292 (2017). 7. Hayat, T., Nisar, Z., Yasmin, H., and Alsaedi, A. Peristaltic transport of nanouid in a compliant wall channel with convective conditions and thermal radiation", Journal of Molecular Liquids, 220, pp. 448 453 (2016). 8. Sheikholeslami, M., and Seyednezhad, M. Simulation of nanouid ow and natural convection in a porous media under the inuence of electric _eld using CVFEM", International Journal of Heat and Mass Transfer, 120, pp. 772781 (2018). 9. Sheikholeslami, M., Shamlooei, M., and Moradi, R. Numerical simulation for heat transfer intensi_cation of nanouid in a permeable curved enclosure considering shape e_ect of Fe3O4 nanoparticles", Chemical Engineering & Processing: Process Intensi_cation, 124, pp. 7182 (2018). 10. Selimefendigil, F. and Oztop, H.F. Conjugate natural convection in a cavity with a conductive partition and _lled with di_erent nanouids on di_erent sides of the partition", Journal of Molecular Liquids, 216, pp. 67 77 (2016). 11. Sheikholeslami, M., Hayat, T., Muhammad, T., and Alsaedi, A. MHD forced convection ow of nanouid in a porous cavity with hot elliptic obstacle by means of lattice Boltzmann method", International Journal of Mechanical Sciences, 135, pp. 532540 (2018). 12. Sheikholeslami, M. and Rokni, H.B. Numerical simulation for impact of Coulomb force on nanouid heat transfer in a porous enclosure in presence of thermal radiation", International Journal of Heat and Mass Transfer, 118, pp. 823831 (2018). 13. Sheikholeslami, M. Numerical investigation for CuOH2O nanouid ow in a porous channel with magnetic _eld using mesoscopic method", Journal of Molecular Liquids, 249, pp. 739746 (2018) 14. Sheikholeslami Kandelousi, M. E_ect of spatially variable magnetic _eld on ferrouid ow and heat transfer considering constant heat ux boundary condition", The European Physical Journal Plus, 1, pp. 129248 (2014). 15. Sheikholeslami, M. and Shehzad, S.A. Magnetohydrodynamic nanouid convection in a porous enclosure considering heat ux boundary condition", International Journal of Heat and Mass Transfer, 106, pp. 12611269 (2017). 16. Akbar, N.S., Raza, M., and Ellahi, R. Interaction of nano particles for the peristaltic ow in an asymmetric channel with the induced magnetic _eld", The European Physical JournalPlus, 129, pp. 155167 (2014). 17. Sheikholeslami, M., Ganji, D.D., Javed, M.Y., and Ellahi, R. E_ect of thermal radiation on magnetohydrodynamics nanouid ow and heat transfer by means of two phase model", Journal of Magnetism and Magnetic Materials, 374, pp. 3643 (2015). 18. Sheikholeslami, M., Shamlooei, M., and Moradi, R. Fe3O4ethylene glycol nanouid forced convection inside a porous enclosure in existence of Coulomb force", Journal of Molecular Liquids, 249, pp. 429437 (2018). 19. Sheikholeslami, M. and Shehzad, S.A. Numerical analysis of Fe3O4H2O nanouid ow in permeable media under the e_ect of external magnetic source", International Journal of Heat and Mass Transfer, 118, pp. 182192 (2018). 20. Sheikholeslami, M., Hayat, T., and Alsaedi, A. Numerical simulation for forced convection ow of MHD CuOH2O nanouid inside a cavity by means of LBM", Journal of Molecular Liquids, 249, pp. 941948 (2018). 21. Sheikholeslami, M., and Sadoughi, M.K. Simulation of CuOwater nanouid heat transfer enhancement in presence of melting surface", International Journal of Heat and Mass Transfer, 116, pp. 909919 (2018) 22. Sheikholeslami, M. Magnetic _eld inuence on CuOH2O nanouid convective ow in a permeable cavity considering various shapes for nanoparticles", International Journal of Hydrogen Energy, 42, pp. 19611 19621 (2017). 23. Yamaguchi, T., Tsuruda Y., Furukawa T., Negishi L., Imura Y., and Sakuda S. Yoshimura E7,8, Suzuki M9, synthesis of CdSe quantum dots using fusarium oxysporum", Materials (Basel), 9(10), pii: E855. (Oct 2016). DOI: 10.3390/ma9100855 24. Sheikholeslami, M. Numerical investigation of nanouid free convection under the inuence of electric _eld in a porous enclosure", Journal of Molecular Liquids, 249, pp. 12121221 (2018). 25. Sheikholeslami, M. CuOwater nanouid ow due to magnetic _eld inside a porous media considering Brownian motion", Journal of Molecular Liquids, 249, pp. 921929 (2018). 26. Sheikholeslami, M. and Shehzad, S.A. Magnetohydrodynamic nanouid convective ow in a porous enclosure by means of LBM", International Journal of Heat and Mass Transfer, 113, pp. 796805 (2017). 27. Sheikholeslami, M. Lattice Boltzmann method simulation of MHD nonDarcy nanouid free convection", Physica B, 516, pp. 5571 (2017). 28. Sheikholeslami, M. Lattice Boltzmann method simulation of MHD nonDarcy nanouid free convection", Physica B, 516, pp. 5571 (2017). 29. Sheikholeslami, M. and Bhatti, M.M. Forced convection of nanouid in presence of constant magnetic _eld considering shape e_ects of nanoparticles", International Journal of Heat and Mass Transfer, 111, pp. 10391049 (2017). 30. Sheikholeslami, M. Inuence of magnetic _eld on nanouid free convection in an open porous cavity by means of lattice Boltzmann method", Journal of Molecular Liquids, 234, pp. 364374 (2017) 31. Sheikholeslami, M. and Ganji, D.D. Numerical approach for magnetic nanouid ow in a porous cavity using CuO nanoparticles", Materials and Design, 120, pp. 382393 (2017). 32. Sheikholeslami, M., Ziabakhsh, Z. and Ganji, D.D. Transport of magnetohydrodynamic nanouid in a porous media", Colloids and Surfaces A: Physicochemical and Engineering Aspects, 520, pp. 201212 (2017). 33. Sheikholeslami, M. and Chamkha, A.J. Electrohydrodynamic free convection heat transfer of a nanouid in a semiannulus enclosure with a sinusoidal wall", Numerical Heat Transfer, Part A, 69(7), pp. 781793 (2016). http://dx.doi.org/10.1080/10407782. 2015.1090819 34. Khanafer, K., Vafai, K., and Lightstone M. Buoyancydriven heat transfer enhancement in a twodimensional enclosure utilizing nanouids", Int J Heat Mass Transf, 446, pp. 36393653 (2003). 35. Sheikholeslami, M. and Ganji, D.D. Hydrothermal Analysis in Engineering Using Control Volume Finite Element Method, Academic Press, Print Book, pp. 1 226, ISBN : 9780128029503 (2015). 36. Moallemi, M.K. and Jang, K.S. Prandtl number e_ects on laminar mixed convection heat transfer in a liddriven cavity", Int. J. Heat Mass Tran., 35, pp. 18811892 (1992).##]
1

Multiflute drillbroach for precision machining of holes
http://scientiairanica.sharif.edu/article_20186.html
10.24200/sci.2018.5623.1379
1
This paper deals with holeenlarging multiflute drill processing. The analysis of existing structures, their advantages and disadvantages is carried out. Cutting conditions during holeenlarging multiflute drill processing are shown. A new design of holeenlarging multiflute drill as a holeenlarging multiflute drillbroaching tool from broachingspeed steel with carbide plates, as well as a new way of handling the new tools is offered. Holeenlarging multiflute drillbroaching combines the features of holeenlarging multiflute drill (in cross section) and the features of broaching tool (in longitudinal section). In this way, it was possible to increase the quality of hole making (size variance, surface roughness), to facilitate the cutting conditions and to increase the durability. The results of prototypes testing are presented.
0

1415
1426


N.
Dudak
Department of Mechanical Engineering and Standardization, S. Toraighyrov Pavlodar State University, Lomov Street 64,
Pavlodar, Kazakhstan.
Kazakhstan
nikolaydns@mail.ru


G.
Itybaeva
Department of Mechanical Engineering and Standardization, S. Toraighyrov Pavlodar State University, Lomov Street 64,
Pavlodar, Kazakhstan.
Kazakhstan
galiaitibaeva@mail.ru


A.
Kasenov
Department of Mechanical Engineering and Standardization, S. Toraighyrov Pavlodar State University, Lomov Street 64,
Pavlodar, Kazakhstan.
Kazakhstan
asylbekk@yahoo.com


Zh.
Mussina
Department of Mechanical Engineering and Standardization, S. Toraighyrov Pavlodar State University, Lomov Street 64,
Pavlodar, Kazakhstan.
Kazakhstan
mussina_zhanara@mail.ru


A.
Taskarina
Department of Metallurgy, S. Toraighyrov Pavlodar State University, Lomov Street 64, Pavlodar, Kazakhstan.
Kazakhstan
aya_taskarina@mail.ru


K.
Abishev
Department of Transport Engineering and Logistics, S. Toraighyrov Pavlodar State University, Lomov Street 64, Pavlodar,
Kazakhstan
Kazakhstan
a.kairatolla@mail.ru
multiflute drill processing
the quality of hole making
hole enlarging
hole surface microstructure
[1. Webzell, S. Analysis of factors a_ecting the tool life", Metalwork. Prod., 150, pp. 6566 (2006). 2. Wang, Y.J., Zhang, D.H., Wu, F.J., Yao, K., and Hou, Z.M. Simulation of cutting force based on software deform ICICTA: 2009", In Second Int. Conf. Intell. Comput. Technol. Autom., pp. 224227 (2009). 3. Vogtel, P., Klocke, F., Lung, D., and Terzi, S. Automatic broaching tool design by technological and geometrical optimization", Procedia CIRP, 33, pp. 496501 (2015). 4. Vogtel, P., Klocke, F., Puls, H., Buchkremer, S., and Lung, D. Modelling of process forces in broaching inconel 718", Procedia CIRP, 8, pp. 409414 (2013). 5. Goncalves, D.A. and Schroeter, R.B. Modeling and simulation of the geometry and forces associated with the helical broaching process", Int. J. Adv. Manuf. Technol., 83, pp. 205215 (2016). N. Dudak et al./Scientia Iranica, Transactions B: Mechanical Engineering 26 (2019) 1415{1426 1425 6. Hosseini, A. and Kishawy, H.A. Prediction of cutting forces in broaching operation", J. Adv. Manuf. Syst., 12(01), pp. 114 (2013). 7. Kishawy, H.A., Hosseini, A., MoetakefImani, B., and Astakhov, V.P. An energy based analysis of broaching operation: Cutting forces and resultant surface integrity", CIRP Ann.  Manuf. Technol., 61, pp. 107 110 (2012). 8. Klocke, F., Gierlings, S., Brockmann, M., and Veselovac, D. Forcebased temperature modeling for surface integrity prediction in broaching nickelbased alloys", Procedia CIRP, 13, pp. 314319 (2014). 9. Lazarev, D.E. and Nasad, T.G. Cutting tools for improving the quality and productivity of precise holes machining", Mach. Tools., 1, pp. 1417 (2014). 10. Dudak, N.S., Itybaeva, G.T., Kassenov, A.Z., and Mussina, Z.K. Part of the 14th Nechnik_e Sciences", In Proc. IV Int. Sci.  Pract. Conf. Scienti_c Ind. Eur. Cont.  2008", Publishing House <>, Prague, pp. 6771 (2008). 11. Beju, L.D., Br^_nda_su, D.P., Mut_iu, N.C., and Rothmund, J. Modeling, simulation and manufacturing of drill utes", Int. J. Adv. Manuf. Technol., 83(912), pp. 21112127 (2016). 12. Gupta, K.K., Jain, T., and Deshmukh, M. Optimization of process parameters in high rpm micro drilling machine", Int. J. Innov. Eng. Technol., 2, pp. 128130 (2013). 13. Zhao, C., Liang, Z., Zhou, H., and Qin, H. Investigation on shaping machining method for deep hole keyway based on online symmetry detection and compensation", Journal of Mechanical Science and Technology, 31(3), pp. 13731381 (2017). 14. Kwon, K.B., Song, C.H., Park, J.Y., Oh, J.Y., Lee, J.W., and Cho, J.W. Evaluation of drilling e_ciency by percussion testing of a drill bit with new button arrangement", International Journal of Precision Engineering and Manufacturing, 15(6), pp. 10631068 (2014). 15. Bulat, P. and Volkov, K. Detonation jet engine. Part 1  Thermodynamic cycle", Int. J. Environ. Sci. Educ., 11, pp. 50095019 (2016). 16. Bulat, P., Volkov, K., and Ilyina, T. Interaction of a shock wave with a cloud of particles", IEJMEMathematics Educ., 11, pp. 29492962 (2016). 17. Baroiu, N., Berbinschi, S., Teodor, V., and Oancea, N. The modeling of the active surfaces of a multi ute helical drill with curved cutting edge using the SV& Toolbox environment", in: Proc. 13th Int. Conf. ToolsICT, Miskolc, pp. 259264 (2012). 18. Baroiu, N., Boazu, D., Vasilache, C.A., and Teodor, V. Modeling of stress in drills with curved cutting edges", Appl. Mech. Mater., 371, pp. 509513 (2013). 19. Lorincz, J. Using digital tools to optimize your cutting tools", Manuf. Eng. Mag., 152(1), pp. 5562 (2014). 20. Dudak, N.S., Kasenov, A.Z., Musina, Z.K., Itybaeva, G.T., and Taskarina, A.Z. Holemaking with the use of reaming and broaching tool", Life Sci. J., 11, pp. 282288 (2014). 21. Byrne, G. Current state of various materials cutting technology and its practical application area", Ann. CIRP., 52(2), pp. 483507 (2003). 22. Benes, J. Overview of cutting tools", Am. Mach., 6, pp. 1820 (2007). 23. Fisher, R. The Arrangement of _eld experiments", J. Minist. Agric. Gt. Britain., 33, pp. 503513 (1926). 24. Cochran, W.G. The distribution of the largest of a set of estimated variances as a fraction of their total", Ann. Hum. Genet., 11, pp. 4752 (1941).##]
1

Rolling contact fatigue analysis of rails under the in uence of residual stresses induced by manufacturing
http://scientiairanica.sharif.edu/article_20196.html
10.24200/sci.2018.5704.1429
1
This study aims to analyze the rolling contact fatigue influenced by residual stresses caused by the contact of the wheel and rail and its manufacturing process. For this purpose, a rail available in Iran railway is used with an exact profile geometry. The location of maximum stress caused by the contact of wheel/rail for rail profiles can be calculated by threedimensional elasticplastic finite element model. Then, in order to estimate the stress distribution caused by rail manufacturing process, a thermal analysis with finite element method will be performed. Afterwards, the results of performed stress analysis will be used as input for threedimensional crack growth and rail fatigue life estimation model to calculate the stress intensity factors and fatigue life according to the set of related parameters with boundary element method. Finally, threedimensional finite element analysis results obtained show good agreement with those achieved in field measurements.
0

1427
1437


R.
Masoudi Nejad
Faculty of Engineering, Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.
Iran
reza.masoudinejad@gmail.com


M.
Shariati
Faculty of Engineering, Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.
Iran
mshariati44@um.ac.ir


Kh.
Farhangdoost
Faculty of Engineering, Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.
Iran
khalil.farhangdoost@gmail.com


A.
Atrian
Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
Iran
amir.atr3215@gmail.com
Rolling contact fatigue
Manufacturing process
Finite Element
Fatigue crack growth
Boundary element
[1. Hadipour, M., Alambeigi, F., Hosseini, R., and Masoudinejad, R. A study on the vibrational e_ects of adding an auxiliary chassis to a 6ton truck", Journal of American Science, 7(6), pp. 12191226 (2011). 2. Masoudi Nejad, R., Farhangdoost, Kh., and Shariati, M. Numerical study on fatigue crack growth in railway wheels under the inuence of residual stresses", Engineering Failure Analysis, 52, pp. 7589 (2015). 3. Masoudi Nejad, R. Using threedimensional _nite element analysis for simulation of residual stresses in railway wheels", Engineering Failure Analysis, 45, pp. 449455 (2014). 4. Salehi, S.M., Farrahi, G.H., Sohrabpoor, S., and Masoudi Nejad, R. Life estimation in the railway wheels under the inuence of residual stress _eld", International Journal of Railway Research, 1(1), pp. 5360 (2014). 5. Ghahremani Moghadam, D., Farhangdoost, Kh., and Masoudi Nejad, R. Microstructure and residual stress distributions under the inuence of welding speed in friction stir welded 2024 aluminum alloy", Metallurgical and Materials Transactions B, 47(3), pp. 20482062 (2016). 6. Kwon, S., Seo, J.W., Jun, H.K, and Lee, D.H. Damage evaluation regarding to contact zones of highspeed train wheel subjected to thermal fatigue", Engineering Failure Analysis, 55, pp. 327342 (2015). 7. Vakkalagadda, M.R.K., Vineesh, K.P., Mishra, A., and Racherla, V. Locomotive wheel failure from gauge widening/condemning: E_ect of wheel pro_le, brake block type, and braking conditions", Engineering Failure Analysis, 59, pp. 116 (2016). 8. Vakkalagadda, M.R.K., Vineesh, K.P., Mishra, A., and Racherla, V. Locomotive wheel failure from gauge widening/condemning: Finite element modeling and identi_cation of underlying mechanism", Engineering Failure Analysis, 57, pp. 143155 (2015). 9. Ringsberg, J.W. and Lindback, T. Rolling contact fatigue analysis of rails including numerical simulations of the rail manufacturing process and repeated wheelrail contact loads", International Journal of Fatigue, 25(6), pp. 547558 (2003). 10. Skyttebol, A., Josefson, B.L., and Ringsberg, J.W. Fatigue crack growth in a welded rail under the inuence of residual stresses", Engineering Fracture Mechanics, 72(2), pp. 271285 (2005). 11. Masoudi Nejad, R., Farhangdoost, Kh., and Shariati, M. Threedimensional simulation of rolling contact fatigue crack growth in UIC60 rails", Tribology Transactions, 59(6), pp. 10591069 (2016). 12. Masoudi Nejad, R., Farhangdoost, Kh., Shariati, M., and Moavenian, M. Stress intensity factors evaluation for rolling contact fatigue cracks in rails", Tribology Transactions, 60(4), pp. 645652 (2016). 13. Shariati, M. and Masoudi Nejad, R. Fatigue strength and fatigue fracture mechanism for spot welds in Ushape specimens", Latin American Journal of Solids and Structures, 13(15), pp. 27872801 (2016). 14. Shariati, M., Mohammadi, E., and Masoudi, Nejad R. E_ect of a new specimen size on fatigue crack R. Masoudi Nejad et al./Scientia Iranica, Transactions B: Mechanical Engineering 26 (2019) 1427{1437 1437 growth behavior in thickwalled pressure vessels", International Journal of Pressure Vessels and Piping, 150, pp. 110 (2017). 15. Wong, S.L., Bold, P.E., Brown, M.W., and Allen, R.J. A branch criterion for shallow angled rolling contact fatigue cracks in rails", Wear, 191(1), pp. 45 53 (1996). 16. Murakami, Y., Sakae, C., Hamada, S., Beynon, J.H., and Brown, M.W., Engineering Against Fatigue, A.A. Balkema Publications, Rotterdam (1999). 17. Chue, C.H. and Chung, H.H. Pitting formation under rolling contact", Theoretical and Applied Fracture Mechanics, 34(1), pp. 19 (2000). 18. Masoudi Nejad, R. Rolling contact fatigue analysis under inuence of residual stresses", MS Thesis, Sharif University of Technology, School of Mechanical Engineering (2013). 19. Masoudi Nejad, R., Salehi, S.M., and Farrahi, G.H. Simulation of railroad crack growth life under the inuence of combination mechanical contact and thermal loads", in 3rd International Conference on Recent Advances in Railway Engineering, Iran (2013). 20. Masoudi Nejad, R., Salehi, S.M., Farrahi, G.H., and Chamani, M. Simulation of crack propagation of fatigue in Iran rail road wheels and e_ect of residual stresses", In: Proceedings of the 21st International Conference on Mechanical Engineering, Iran (2013). 21. Masoudi Nejad, R., Shariati, M., and Farhangdoost, Kh. 3D _nite element simulation of residual stresses in UIC60 rails during the quenching process", Thermal Science, 21(3), pp. 13011307 (2017). 22. Masoudi Nejad, R., Shariati, M., and Farhangdoost, Kh. E_ect of wear on rolling contact fatigue crack growth in rails", Tribology International, 94, pp. 118 125 (2016). 23. Elber, W. The signi_cance of fatigue crack closure, in damage tolerance in aircraft structures", ASTM STP, 486, pp. 230242 (1971). 24. Anderson, T.L., Fracture Mechanics, Fundamentals and Applications, 2nd Ed., CRC press (1994). 25. Newman, J.C. A crack opening stress equation for fatigue crack growth", International Journal of Fracture, 24(4), pp. 131135 (1984). 26. Masoudi Nejad, R. Threedimensional analysis of rolling contact fatigue crack and life prediction in railway wheels and rails under residual stresses and wear", Ph.D. Thesis, Ferdowsi University of Mashhad, School of Mechanical Engineering (2017). 27. Magel, E., Sroba, P., Sawley, K., and Kalousek, J., Control of Rolling Contact Fatigue of Rails, Center for Surface Transportation Technology, National Research Council Canada (2005).##]
1

Improvement of dissipative particle dynamics method by taking into account the particle size
http://scientiairanica.sharif.edu/article_21042.html
10.24200/sci.2018.21042
1
In this paper, flow past a single Dissipative Particle Dynamics (DPD) particle with low Reynolds number is investigated and it is inquired that whether a single DPD particle immersed in a fluid, has an intrinsic size. Then a minimum length scale is determined such that the hydrodynamic behavior based on standard DPD formulation is modeled correctly. Almost all of the previous studies assume the DPD particles as point centers of repulsion with no intrinsic size. Hence to prescribe the size of a simulating sphere, a structure of frozen DPD particles is created. In this paper two effective radii, StokesEinstein radius and a radius based on the Stokes law, for DPD particles are introduced. For small Reynolds numbers; it is proved that the two radii approach each other. Finally in spite of the typical simulations which assume DPD particles as point centers of repulsion, it is concluded that each of the individual DPD particles interact with other particles as a sphere with nonzero radius. It results the reduction of the required number of particles and eventuates more economical simulations. Moreover contemplating the radius of the particles is necessary for the new LowDimensional model which is derived based on the DPD method.
0

1438
1445


S.
Yaghoubi
Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
Iran
s.yaghoubi@pmc.iaun.ac.ir


E.
Shirani
Department of Mechanical Engineering, Foolad Institute of Technology, Fooladshahr, Isfahan, P.O. Box 84915651, Iran.
Iran
eshirani@ictp.it


A.R.
Pishevar
Center of Excellence in Energy Conversion, Department of Mechanical Engineering, Isfahan University of Technology, Isfahan,
P.O. Box 8415683111, Iran.
Iran
Dissipative Particle Dynamics
LowDimensional model
Low Reynolds number
StokesEinstein equation
[1. Chen, S., PhanThien, N., Khoo, B.C., and Fan, X.J. Flow around spheres by dissipative particle dynamics", Physics of Fluids, 18(10), 103605 (2006). 2. Pryamitsyn, V. and Ganesan, V. A coarsegrained explicit solvent simulation of rheology of colloidal suspensions", Journal of Chemical Physics, 122(10), 104906 (2005). 3. Symeonidis, V., Caswell, B., and Karniadakis, G.E. Dissipative particle dynamics simulations of polymer chains: Scaling laws and shearing response compared to DNA experiments", Physical Review Letters, 95, 076001 (2005). 4. Yaghoubi, S., Pishevar, A.R., Saidi, M.S., and Shirani, E. Modeling selfassembly of the surfactants into biological bilayer membranes with special chemical structures using dissipative particle dynamics method", Scientia Iranica, 23(3), pp. 942950 (2016). 5. Kumar, A., Asako, Y., Abunada, E., Krafczyk, M., and Faghri, M. From dissipative particle dynamics to physical scales: A coarsegraining study for water ow in microchannel", Microuid Nanouid Journal, 7, pp. 467477 (2009). 6. Hoogerbrugge, P.J. and Koelman, J.M.V.A. Simulating microscopic hydrodynamic phenomena with dissipative particle dynamics", Europhys. Lett., 19(3), pp. 155160 (1992). 7. Groot, R.D. and Warren, P.B. Dissipative particle dynamics: Bridging the gap between atomistic and mesoscopic simulation", Journal of Chemical Physics, 107(11), pp. 44234435 (1997). 8. Espanol, P. and Warren, P.B. Statistical mechanics of dissipative particle dynamic", Europhysics Letters, 30(4), pp. 191196 (1995). 9. Yaghoubi, S., Shirani, E., Pishevar, A.R., and Afshar, Y. New modi_ed weight function for the dissipative force in the DPD method to increase the Schmidt number", Europhysics Letters, 110, 24002 (2015). 10. Fan, X.J., PhanThien, N., Chen, S., Wu, X.H., and Ng, T.Y. Simulating ow of DNA suspension using dissipative particle dynamics", Physics of Fluids, 18(6), p. 063102 (2006). 11. Pan, W., Fedosov, D.A., Karniadakis, G.E., and Caswell, B. Hydrodynamic interactions for single dissipativeparticledynamics particles and their clusters and _laments", Physical Review E, 78(4), 046706 (2008). 12. Frenkel, D. and Smit, B., Understanding Molecular Simulation from Algorithms to Applications, Academic Press, California (2002). 13. Lees, A.W. and Edwards, S.F. The computer study of transport processes under extreme conditions", J. of Phys. C: Solid State Physics, 5, 1921 (1972). 14. Fax, R.W. and McDonald, A.T., Introduction to Fluid Mechanics, Wiley Publications, fourth edition (1978). 15. Allen, M.P. and Tildesley, D.J., Computer Simulation of Liquids, Oxford Science Publications, Oxford (1987). 16. Verlet, L. Computer experiment on classical uids I. Thermodynamical properties of LennardJones molecules", Physical Review, 159, pp. 98103 (1967). 17. Tiwari, A., Dissipative particle dynamics model for two phase ows", Ph.D. Thesis, University of Purdue (2006). 18. Pan, W., Single particle DPD: Algorithms and applications", Ph.D. Thesis, University of brown, (2010). 19. Espanol, P. Fluid particle model", Physical Review E, 57(3), pp. 29302948 (1998). 20. Espanol, P. Fluid particle dynamics: A synthesis of dissipative particle dynamics and smoothed particle dynamics", Europhysics Letters, 39(6), pp. 605610 (1997). 21. Espanol, P. and Revenga, M. Smoothed dissipative particle dynamics", Physical Review E, 67, 026705 (2003). 22. Pan, W., Pivkin, I.V., and Karniadakis, G.E. Singleparticle hydrodynamics in dpd: A new formulation", Europhysics Letters, 84(1), 10012 (2008).##]