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

Wei-Wei Yan, Yang Liu (), Zhao-Li Guo and You-Sheng Xu ()
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Wei-Wei Yan: Department of Physics, Zhejiang Normal University, Jinhua 321004, China
Yang Liu: Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Zhao-Li Guo: National Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
You-Sheng Xu: Department of Physics, Zhejiang Normal University, Jinhua 321004, China;

International Journal of Modern Physics C (IJMPC), 2006, vol. 17, issue 06, 771-783

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.

Keywords: LBM; heat transfer; porous medium (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1142/S0129183106009291

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