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Lattice Boltzmann Simulation On Natural Convection Heat Transfer In A Two-Dimensional Cavity Filled With Heterogeneously Porous Medium

Author

Listed:
  • 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;
    Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China)

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.

Suggested Citation

  • Wei-Wei Yan & Yang Liu & Zhao-Li Guo & You-Sheng Xu, 2006. "Lattice Boltzmann Simulation On Natural Convection Heat Transfer In A Two-Dimensional Cavity Filled With Heterogeneously Porous Medium," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 17(06), pages 771-783.
    • Handle: RePEc:wsi:ijmpcx:v:17:y:2006:i:06:n:s0129183106009291
    DOI: 10.1142/S0129183106009291
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