Numerical study of natural convection in porous media (metals) using Lattice Boltzmann Method (LBM)

作者：Zhao C Y^*; Dai L N; Tang G H; Qu Z G; Li Z Y

来源：International Journal of Heat and Fluid Flow, 2010, 31(5): 925-934.

DOI：10.1016/j.ijheatfluidflow.2010.06.001

• Lattice Boltzmann thermal model
• Doubled populations BGK
• Natural convection
• Porous media
• Porosity
• Pore density

A thermal lattice BGK model with doubled populations is proposed to simulate the two-dimensional natural convection flow in porous media (porous metals). The accuracy of this method is validated by the benchmark solutions. The detailed flow and heat transfer at the pore level are revealed. The effects of pore density (cell size) and porosity on the natural convection are examined. Also the effect of porous media configuration (shape) on natural convection is investigated. The results showed that the overall heat transfer will be enhanced by lowering the porosity and cell size. The square porous medium can have a higher heat transfer performance than spheres due to the strong flow mixing and more surface area.

• 出版日期2010-10
• 单位西安交通大学