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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561
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NATURAL CONVECTION HEAT TRANSFER IN A SQUARE CAVITY CONTAINING A NANOFLUID WITH A BAFFLE UNDER A MAGNETIC FIELD
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RÉSUMÉ
A buoyancy-driven fluid flow and heat transfer in a square cavity with a vertical plate at the center and filled with Al2O3−water nanofluid is examined numerically. The left and the right side walls of the cavity are maintained at temperatures Th and Tc, respectively, with Th > Tc. The enclosure's top and bott om walls are adiabatic. The transport equations are discretized using the finite volume method. Comparisons with previous works are presented and found to be in excellent agreement. The heat and fluid flow structures are fully investigated via streamlines and isotherms. A parametric study is carried out and the effects of the Rayleigh number, Hartmann number, and Joule heating on the fluid flow and heat transfer inside an enclosure are studied. The results show that the average Nusselt number increases with the Rayleigh number. Finally, it is found that a magnetic field has strong influence on the rate of heat transfer while the role of the Joule heating is marginal.
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Kandaswamy P., Abdul Hakeem A.K., Saravanan S., Internal natural convection driven by an orthogonal pair of differentially heated plates, Computers & Fluids, 111, 2015. Crossref
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Solghar Alireza Arab, Buoyancy Convection in a Square Cavity with Parallel Heaters Under Magnetic Field, Iranian Journal of Science and Technology, Transactions of Mechanical Engineering, 42, 4, 2018. Crossref
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Sarlak Ramin, Yousefzadeh Shahrouz, Akbari Omid Ali, Toghraie Davood, Sarlak Sajad, assadi Fattah, The investigation of simultaneous heat transfer of water/Al2O3 nanofluid in a close enclosure by applying homogeneous magnetic field, International Journal of Mechanical Sciences, 133, 2017. Crossref
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Gholami Milad, Nazari Mohammad Reza, Talebi Mohammad Hossien, Pourfattah Farzad, Akbari Omid Ali, Toghraie Davood, Natural convection heat transfer enhancement of different nanofluids by adding dimple fins on a vertical channel wall, Chinese Journal of Chemical Engineering, 28, 3, 2020. Crossref
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Al-Farhany Khaled, Al-Chlaihawi Kadhim K., Al-dawody Mohamed F., Biswas Nirmalendu, Chamkha Ali J., Effects of fins on magnetohydrodynamic conjugate natural convection in a nanofluid-saturated porous inclined enclosure, International Communications in Heat and Mass Transfer, 126, 2021. Crossref