哈尔滨工程大学学报Issue(6)：774-778,5.DOI:10.3969/j.issn.1006-7043.201404044
基于孔隙尺度的方腔内多孔介质融化模拟研究
Simulation study for melting of porous media in a square cavity based on the pore scale
摘要
Abstract
When a bounce⁃back scheme is used to handle no⁃slip boundary conditions, the lattice Bhatnagar⁃Gross⁃Krook ( LBGK) model in lattice Boltzmann method ( LBM) will result in viscosity⁃dependence of boundary locations. So in this paper, the multiple relaxation time ( MRT) model was chosen to research the naturally convec⁃ted melting process of porous media in a closed square cavity based on the pore scale. In particular, the enthalpy⁃based method was used to simulate solid⁃liquid phase change. The effects of Rayleigh and Prandtl numbers on melt⁃ing were also analyzed. The results indicate that the MRT model can well predict conduction⁃dominated and convec⁃tion⁃dominated melting. The solid⁃liquid interface is no longer parallel to vertical walls for conduction melting of porous media. The interface appears irregular shapes in the natural convection⁃dominated melting of porous media. The Rayleigh and Prandtl numbers have larger influence on the melting of porous media.关键词
多孔介质/孔隙尺度/融化/自然对流/格子Boltzmann方法Key words
porous media/pore scale/melting/natural convection/lattice Boltzmann method分类
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王猛,朱卫兵..基于孔隙尺度的方腔内多孔介质融化模拟研究[J].哈尔滨工程大学学报,2015,(6):774-778,5.基金项目
高超声速冲压发动机技术重点实验室开放基金资助项目（20140103008）；哈尔滨市科技创新人才研究专项资助项目（2014RFXXJ062）． （）
