超声速平板绕流DSMC/EPSM混合算法研究  

The study of hybrid DSMC/EPSM method of supersonic flat plate

作　　者：陈伟芳[1] 吴明巧[1] 赵玉新[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4期441-445,共5页Acta Aerodynamica Sinica

基　　金：国家自然科学基金资助项目;项目编号(19902021)

摘　　要：本文将平衡粒子模拟方法(EPSM)与蒙特卡罗直接模拟方法(DSMC)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4时超声速平板绕流,并与DSMC结果进行比较,证明了DSMC/EPSM混合算法的有效性。将DSMC方法与混合算法的计算效率进行了比较。The Equilibrium Particle method (EPSM) method is combined with the Direct Simulation Monte Carlo (DSMC) method to produce a hybrid DSMC/EPSM method which could handle flows including transition regime and continuum regime. The supersonic flow past a flat plate is calculated by using the DSMC method and the hybrid DSMC/EPSM method. The results show the effectiveness of the hybrid DSMC/EPSM method. The computational efficiency of the DSMC/EPSM hybrid method and the DSMC method is compared.

关 键 词：DSMC EPSM 混合算法 超声速流动 绕流 

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]