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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2011002695
pages 251-266

Numerical Study of Free Convection Heat Transfer in a Square Cavity with a Fin Attached to Its Cold Wall

Saeid Jani
Department of Mechanical Engineering, Golpayegan University of Technology, Golpayegan, Iran
Meysam Amini
Energy Technologies Research Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Mostafa Mahmoodi
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran; Department of Mechanical Engineering, University of Kashan, Kashan 87317-53153, Iran

RÉSUMÉ

Fluid flow and natural convection heat transfer in a differentially heated square cavity with a fin attached to its cold wall is investigated numerically. The top and the bottom horizontal walls of the cavity are insulated while the left and right vertical walls of the cavity are maintained at a constant temperature Th and Tc, with Th > Tc, respectively. The governing equations written in terms of the primitive variables are solved numerically using the finite volume method and the SIMPLER algorithm. Using the developed code, a parametric study is performed, and the effects of the Rayleigh number, length of the fin and its position on the flow pattern and heat transfer inside the enclosure are investigated. The results show that for high Rayleigh numbers, a longer fin placing at the middle of the right wall has a more remarkable effect on the flow field and heat transfer inside the cavity.