A hydrodynamically correct thermal lattice Boltzmann model

被引：61

作者：

McNamara, GR

Garcia, AL

Alder, BJ

机构：

[1] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550

[2] SAN JOSE STATE UNIV,DEPT PHYS,SAN JOSE,CA 95192

来源：

JOURNAL OF STATISTICAL PHYSICS | 1997年 / 87卷 / 5-6期

关键词：

lattice Boltzmann equation; Rayleigh-Benard convection; numerical stability;

D O I：

10.1007/BF02181274

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A three-dimensional lattice-Boltzmann model which yields correct hydrodynamics at the Navier-Stokes level of the Chapman-Enskog expansion requires a minimum of 26 velocities. We present results For a model with one additional velocity, determined by maximizing the equilibrium entropy. For compressible Rayleigh-Benard convection the model is more accurate but considerably less stable, than a previous, approximate 21-speed model.

引用

页码：1111 / 1121

页数：11

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