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LATTICE BOLTZMANN SIMULATION ON NATURAL CONVECTION HEAT TRANSFER IN A TWO-DIMENSIONAL CAVITY FILLED WITH HETEROGENEOUSLY POROUS MEDIUM

Department of Physics, Zhejiang Normal University, Jinhua 321004, China

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Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China

Corresponding author.

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National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

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Department of Physics, Zhejiang Normal University, Jinhua 321004, China

Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China

Corresponding author.

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https://doi.org/10.1142/S0129183106009291Cited by:25 (Source: Crossref)

Abstract

The natural convection problem in a square cavity filled with heterogeneously porous medium is solved by lattice Boltzmann method. The temperature distribution is fully coupled with the fluid velocity through relaxation time. The present calculated results are in good agreement with available published data. It is found that the porosity of porous media near the walls has significant influence on the heat transfer, and the porosity of middle porous medium has little influence on the natural convection. It is of particular interest for thermal management in electronic packages, since it can reduce the space of air.

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Vol. 17, No. 06

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Received 6 January 2006

Revised 27 January 2006

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