DSMC/EPSM混合算法研究  

On study of hybrid DSMC/EPSM method

作　　者：陈伟芳[1] 吴明巧[1] 任兵[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《计算力学学报》2003年第3期274-278,共5页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(19902021)资助项目.

摘　　要：将EPSM算法与DSMC方法结合,构造了可模拟含近连续流区及过渡流区的DSMC/EPSM混合算法。运用混合算法模拟了马赫数等于5时超音速竖板绕流及马赫数等于4时超音速平板绕流,并将结果与DSMC算法的结果进行比较,证明了DSMC/EPSM混合算法的有效性,同时将EPSM算法与DSMC算法的效率进行了比较。The Equilibrium Particle Simulation method (EPSM) is combined with the direct simulation Monte Carlo method (DSMC) to produce a hybrid DSMC/EPSM method which could handle flows in the transition region between the rarefiled gas flows and the fully continuum flows. The supersonic flow past a vertical plate and a flat plate are caculated by using the DSMC method and the hybrid DSMC/EPSM method.The results show the effectiveness of the hybrid DSMC/EPSM method.

关 键 词：DSMC/EPSM混合算法 气体动力学 蒙特卡罗直接模拟法 平衡粒子模拟法 超音速平板绕流 稀薄气体流动 

分 类 号：O354.4[理学—流体力学]