A Coupled Discrete Unified Gas-Kinetic Scheme for Convection Heat Transfer in Porous Media
作者机构：State Key Laboratory of Coal CombustionHuazhong University of Science and TechnologyWuhan430074P.R.China
出 版 物：《Communications in Computational Physics》 (计算物理通讯（英文）)
年 卷 期：2021年第29卷第1期
页 面：265-291页
核心收录：
学科分类：07[理学] 0704[理学-天文学] 0701[理学-数学] 0702[理学-物理学] 070101[理学-基础数学]
基 金：support by the National Natural Science Foundation of China(No.11872024)
主 题：Coupled discrete unified gas-kinetic scheme generalized Navier-Stokes equations porous media convection heat transfer
摘 要：In this paper,the discrete unified gas-kinetic scheme(DUGKS)is extended to the convection heat transfer in porous media at representative elementary volume(REV)scale,where the changes of velocity and temperature fields are described by two kinetic *** effects from the porous medium are incorporated into the method by including the porosity into the equilibrium distribution function,and adding a resistance force in the kinetic equation for the velocity *** proposed method is systematically validated by several canonical cases,including the mixed convection in porous channel,the natural convection in porous cavity,and the natural convection in a cavity partially filled with porous *** numerical results are in good agreement with the benchmark solutions and the available experimental *** is also shown that the coupled DUGKS yields a second-order accuracy in both temporal and spatial spaces.
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