格子Boltzmann方法处理复杂边界新进展  

Recent Progress on Complex Boundary Treatments for Lattice Boltzmann Method

作　　者：薛海虹[1] 王政道[2] 钱跃竑[2] 

机构地区：[1]上海交通大学新华医院,上海200092 [2]上海大学理学院力学所,上海200072

出　　处：《力学季刊》2016年第4期615-624,共10页Chinese Quarterly of Mechanics

基　　金：国家自然科学基金(91441104);上海市教育委员会科研创新项目(14YZ038)

摘　　要：格子玻尔兹曼方法是相对较新的计算流体力学方法,具有其独特的优点,如自然并行计算以及复杂边界的处理.在日益重要的高性能计算上,将发挥越来越大的作用.在已经较为成熟的计算模型基础上,为计算复杂几何边界对流场的作用,大量学者提出了各类针对格子玻尔兹曼方法的边界处理格式.边界处理方式对计算的影响主要有三个方面:计算精度,算法稳定性以及并行性.本文简单介绍格子玻尔兹曼方法在边界处理上的一些最新进展.并通过对实际算例的计算比较各类边界处理方式的优劣.Lattice Boltzmann Method is a relatively new method in computational fluid dynamics. It possesses some intrinsic advantages over traditional methods, for example, inherent capability for parallel computing and great convenience in treating complex boundaries. With the increase of the importance for supercomputing, lattice Boltzmatm method will play a more and more important role. The calculation model has been relatively mature. Considering the effect of complex geometric boundary, a large number of scholars put forward various boundary treatment in lattice Boltzmarm method. The influence of boundary treatment for computing mainly lies in three aspects： accuracy, stability and parallelism. In this paper, we will give a brief review for the recent progress of lattice Boltzmann method for treating complex boundary conditions. We make a comparison about the advantages and disadvantages of other kinds of boundary treatments, through some calculations of some typical examples.

关 键 词：计算流体力学 并行计算 流-固耦合 

分 类 号：O357[理学—流体力学]