Kaviteye Yerleştirilen Açılı Kare Silindirden Doğal Ve Zorlanmış Taşınım

Year 2022, Volume: 4 Issue: 2, 97 - 106, 31.08.2022

Nazım Kurtulmuş

https://doi.org/10.46740/alku.1165867

Abstract

Bu çalışmada, kavite içerisine yerleştirilmiş bir açı verilmiş kare silindirde meydana gelen doğal ve zorlanmış taşınım araştırılmıştır. Çözüm için ticari bir yazılım olan Ansys Fluent program kullanılmıştır. Silindir ilk etapta kavite merkezine yerleştirilmiş, daha sonra ise kavite içerisinde x ekseni boyunca farklı konumlarda bulundurulmuştur. Kavite duvarları yalıtılmış, silindir duvarları ise belli bir sıcaklıkta tutulduğu kabul edilmiştir. Reynolds sayısı 100’den 300’ e, Grashof sayısı ise 103’ den 105’ e kadar değişmektedir. Çalışma akışkanı olarak 0,7 Prandtl sayısında ki özelliklere sahip hava tercih edilmiştir. Nusselt sayısındaki değişim, hız ve sıcaklık izotermlerindeki dağılımlar şekiller ve tablolar vasıtasıyla sunulmuştur

Keywords

akış yapısı, doğal ve zorlanmış taşınım, ısı transferi, kavite

Mixed Convection from Inclined Square Cylinder in a Square Cavity

Abstract

In this work, mixed convection from an inclined square cylinder in a cavity is numerically investigated. A commercial CFD solver Ansys Fluent is used to solve the problem. First, the inclined square cylinder is located at the center of the cavity, then the location of the cylinder is changed along the x-axis. The cavity walls are assumed to be adiabatic and the cylinder walls are assumed to be isothermal boundary condition. The Reynolds number, Re varies from 100 to 300 and the Grashof numbers, Gr range from 103 to 105 throughout the work. The working fluid is chosen as air at Prandtl number, Pr = 0.7. The Nusselt number, Nu variations, the distributions of velocity and isotherms are presented in Tables and Figures.

Keywords

cavity, flow structure, heat transfer, mixed convection

References

• Ali J. Chamkha, Salam Hadi Hussain & Qusay Rashid Abd-Amer (2011). "Mixed Convection Heat Transfer of Air inside a Square Vented Cavity with a Heated Horizontal Square Cylinder." Numerical Heat Transfer, Part A: Applications 59 (1), 58-79. DOI: 10.1080/10407782.2011.541216
• [2] M.A.H. Mamun, M.M. Rahman, M.M. Billah, R. Saidur (2010). "A numerical study on the effect of a heated hollow cylinder on mixed convection in a ventilated cavity." International Communications in Heat and Mass Transfer 37 (9), 1326-1334. https://doi.org/10.1016/j.icheatmasstransfer.2010.07.019.
• [3] H. Laidoudi (2020). "Upward flow and heat transfer around two heated circular cylinders in square duct under aiding thermal buoyancy." Journal of the Serbian Society for Computational Mechanics 14(1), 113-123. DOI: 10.24874/jsscm.2020.14.01.10.
• [4] Mahmud H. Ali, Rawand E. Jalal (2020). "Natural convection in a square enclosure with different openings and involves two cylinders: A numerical approach." Frontiers in Heat and Mass Transfer 15(1), 27. DOI: 10.5098/hmt.15.27.
• [5] A. Abouei Mehrizi, M. Farhadi, H. Hassanzade Afroozi, K. Sedighi, A.A. Rabienataj Darz (2012). "Mixed convection heat transfer in a ventilated cavity with hot obstacle: Effect of nanofluid and outlet port location." International Communications in Heat and Mass Transfer 39 (7), 1000-1008. https://doi.org/10.1016/j.icheatmasstransfer.2012.04.002.
• [6] Md. Mustafizur Rahman, Salma Parvin, Md. Hasanuzzaman, Rahman Saidur & Nasrudin A. Rahim (2013). "Effect of Heat-Generating Solid Body on Mixed Convection Flow in a Ventilated Cavity." Heat Transfer Engineering 34 (15), 1249-1261. https://doi.org/10.1080/01457632.2013.730919.
• [7] Fariborz Karimi, Hongtao Xu, Zhiyun Wang, Mo Yang & Yuwen Zhang (2016). "Numerical Simulation of Steady Mixed Convection Around Two Heated Circular Cylinders in a Square Enclosure." Heat Transfer Engineering 37, 64-75. DOI: 10.1080/01457632.2015.1042343.
• [8] M.M. Rahman, S. Parvin, N.A. Rahim, M. Hasanuzzaman, R. Saidur (2012). "Simulation of mixed convection heat transfer in a horizontal channel with an open cavity containing a heated hollow cylinder." Heat Transfer—Asian Research 41, 339-353. https://doi.org/10.1002/htj.21002.
• [9] O.M. Ali (2022). "Effect of Horizontal Spacing on Natural Convection Heat Transfer from Two Aligned Horizontal Cylinders in a Vented Enclosure." Arabian Journal for Science and Engineering 47, 8257–8272. https://doi.org/10.1007/s13369-021-06259-2.
• [10] Omar Mohammed Ali, Omar Rafae Alomar (2021). "Mixed convection heat transfer from two aligned horizontal heated cylinders in a vented square enclosure." Thermal Science and Engineering Progress 25, 101041. https://doi.org/10.1016/j.tsep.2021.101041.
• [11] Ali Omar M., Mahmood Raid A., Al-Brifkani Mohammed W (2022). "Augmentation of convection heat transfer from a horizontal cylinder in a vented square enclosure with variation of lower opening size." Thermal Science 26 (3), 2027-2041. https://doi.org/10.2298/TSCI201119176A.
• [12] T.V. Radhakrishnan, A.K. Verma, C. Balaji, S.P. Venkateshan (2007). "An experimental and numerical investigation of mixed convection from a heat generating element in a ventilated cavity." Experimental Thermal and Fluid Science 32 (2), 502-520. https://doi.org/10.1016/j.expthermflusci.2007.06.001.
• [13] Laith M. Jasim, Hudhaifa Hamzah, Cetin Canpolat, Besir Sahin (2021). "Mixed convection flow of hybrid nanofluid through a vented enclosure with an inner rotating cylinder." International Communications in Heat and Mass Transfer 121, 105086. https://doi.org/10.1016/j.icheatmasstransfer.2020.105086.
• [14] Hudhaifa Hamzah, Cetin Canpolat, Laith M. Jasim, Besir Sahin (2021). "Hydrothermal index and entropy generation of a heated cylinder placed between two oppositely rotating cylinders in a vented cavity." International Journal of Mechanical Sciences 201, 106465. https://doi.org/10.1016/j.ijmecsci.2021.106465.
• [15] Hesam Moayedi (2021). "Investigation of heat transfer enhancement of Cu-water nanofluid by different configurations of double rotating cylinders in a vented cavity with different inlet and outlet ports." International Communications in Heat and Mass Transfer 126, 105432. https://doi.org/10.1016/j.icheatmasstransfer.2021.105432.
• [16] Harun Zontul, Hudhaifa Hamzah, Besir Sahin (2021). "Impact of periodic magnetic source on natural convection and entropy generation of ferrofluids in a baffled cavity." International Journal of Numerical Methods for Heat & Fluid Flow 31 (12), 3547-3575. https://doi.org/10.1108/HFF-10-2020-0671.
• [17] Fatih Selimefendigil, Hakan F. Öztop (2022). "Thermal management and performance improvement by using coupled effects of magnetic field and phase change material for hybrid nanoliquid convection through a 3D vented cylindrical cavity." International Journal of Heat and Mass Transfer 183, 122233. https://doi.org/10.1016/j.ijheatmasstransfer.2021.122233.
• [18] B. Pekmen Geridönmez, H.F. Öztop (2021). "Effects of partial magnetic field in a vented square cavity with aiding and opposing of MWCNT–water nanofluid flows." Engineering Analysis with Boundary Elements 133, 84-94. https://doi.org/10.1016/j.enganabound.2021.08.024.
• [19] Fatih Selimefendigil, Hakan F. Öztop (2019). "Fluid-solid interaction of elastic-step type corrugation effects on the mixed convection of nanofluid in a vented cavity with magnetic field." International Journal of Mechanical Sciences 152, 185-197. https://doi.org/10.1016/j.ijmecsci.2018.12.044.
• [20] A. Purusothaman, H.F. Oztop, N. Nithyadevi, Nidal H. Abu-Hamdeh (2016). "3D natural convection in a cubical cavity with a thermally active heater under the presence of an external magnetic field." Computers & Fluids 128, 30-40. https://doi.org/10.1016/j.compfluid.2016.01.011.
• [21] Aissa Abderrahmane, Umar F. Alqsair, Kamel Guedri, Wasim Jamshed, Nor Ain AzeanyMohd Nasir, Hasan Sh. Majdi, Shaghayegh Baghaei, Abed Mourad, Riadh Marzouki, (2022). "Analysis of mixed convection of a power-law non-Newtonian nanofluid through a vented enclosure with rotating cylinder under magnetic field." Annals of Nuclear Energy 178,109339. https://doi.org/10.1016/j.anucene.2022.109339.
• [22] Fatih Selimefendigil, Hakan F. Öztop (2014). "Numerical investigation and dynamical analysis of mixed convection in a vented cavity with pulsating flow." Computers & Fluids 91, 57-67. https://doi.org/10.1016/j.compfluid.2013.11.033.
• [23] Fatih Selimefendigil, Hakan F. Öztop (2015). "Effects of phase shift on the heat transfer characteristics in pulsating mixed convection flow in a multiple vented cavity." Applied Mathematical Modelling 39 (13), 3666-3677. https://doi.org/10.1016/j.apm.2014.11.065.
• [24] Fluent A.N.S.Y.S (2018), "ANSYS fluent manual.
• [25] J.M. Lee, M.Y. Ha, H.S. Yoon (2010). "Natural convection in a square enclosure with a circular cylinder at different horizontal and diagonal locations." International Journal of Heat and Mass Transfer 53, 5905-5919. https://doi.org/10.1016/j.ijheatmasstransfer.2010.07.043.