超声速平头圆柱绕流DSMC/EPSM混合算法研究  

The study of hybrid DSMC/EPSM method of supersonic flat-nosed cylinder

作　　者：吴明巧[1] 陈伟芳[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：《空气动力学学报》2002年第2期206-210,共5页Acta Aerodynamica Sinica

基　　金：国家自然科学基金资助项目 (1 990 2 0 2 1 )

摘　　要：本文将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。运用混合算法模拟马赫数等于 5 .37时超声速平头圆柱绕流 ,并与DSMC结果进行比较 ,证明了DSMC/EPSM混合算法的有效性 ,并对两种算法的计算效率进行了比较。The Equilibrium Particle Simulation Method (EPSM) is combined with the direct simulation Monte Carlo (DSMC) method to produce a hybrid DSMC/EPSM method which could handle flows in the transition regime between rarefied gas flows and fully continuum flows. The supersonic flow past a flat nosed cylinder is calculated by using the DSMC method and the hybrid DSMC/EPSM method. The result of the hybrid DSMC/EPSM method is compared with the result of DSMC method to show the effectiveness of the hybrid DSMC/EPSM method.Computational efficiency of these two methods is compared.

关 键 词：超声速平头圆柱绕流 EPSM 混合算法 衡薄气体流动 DSMC 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]