Double multiple-relaxation-time lattice Boltzmann model for solid-liquid phase change with natural convection in porous media

被引：74
作者：
Liu, Qing [1 ]
He, Ya-Ling [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2015年 / 438卷
基金：
美国国家科学基金会;
关键词：
Lattice Boltzmann model; Multiple-relaxation-time; Solid-liquid phase change; Enthalpy-based method; Porous media; Natural convection; NAVIER-STOKES EQUATION; HEAT-CONDUCTION; FLOWS; DISSIPATION; DIMENSIONS; TRANSITION; DISPERSION; SYSTEMS;
D O I：
10.1016/j.physa.2015.06.018
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, a double multiple-relaxation-time lattice Boltzmann model is developed for simulating transient solid-liquid phase change problems in porous media at the representative elementary volume scale. The model uses two different multiple-relaxation-time lattice Boltzmann equations, one for the flow field and the other for the temperature field with nonlinear latent heat source term. The model is based on the generalized non-Darcy formulation, and the solid-liquid interface is traced through the liquid fraction which is determined by the enthalpy-based method. The present model is validated by numerical simulations of conduction melting in a semi-infinite space, solidification in a semi-infinite corner, and convection melting in a square cavity filled with porous media. The numerical results demonstrate the efficiency and accuracy of the present model for simulating transient solid-liquid phase change problems in porous media. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：94 / 106
页数：13
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