| 超声速平头圆柱绕流DSMC/EPSM混合算法研究 |
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| 引用本文： | 吴明巧,陈伟芳,任兵.超声速平头圆柱绕流DSMC/EPSM混合算法研究[J].空气动力学学报,2002,20(2):206-210. |
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| 作者姓名： | 吴明巧 陈伟芳 任兵 |
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| 作者单位： | 国防科技大学航天与材料工程学院,湖南长沙,410073 |
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| 基金项目： | 国家自然科学基金资助项目 (1 990 2 0 2 1 ) |
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| 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。
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| 关 键 词： | 超声速平头圆柱绕流 EPSM 混合算法 衡薄气体流动 DSMC |
| 文章编号： | 0258-1825(2002)02-0206-05 |
| 修稿时间： | 2001年5月23日 |
The study of hybrid DSMC/EPSM method of supersonic flat-nosed cylinder |
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| WU Ming qiao,CHEN Wei fang,REN Bin.The study of hybrid DSMC/EPSM method of supersonic flat-nosed cylinder[J].Acta Aerodynamica Sinica,2002,20(2):206-210. |
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| Authors: | WU Ming qiao CHEN Wei fang REN Bin |
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| Abstract: | 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. |
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| Keywords: | DSMC method EPSM method hybrid DSMC/EPSM method flat nosed cylinder rarefied gas dynamics |
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