| 引用本文: | 廖守亿,王承尧.预处理方法求解低马赫数流场的边界条件.[J].国防科技大学学报,2001,23(2):52-56.[点击复制] |
| LIAO Shouyi,WANG Chengyao.Boundary Conditions for Solving Flowfields at Low Mach Numbers by Preconditioning[J].Journal of National University of Defense Technology,2001,23(2):52-56[点击复制] |
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| 预处理方法求解低马赫数流场的边界条件 |
| 廖守亿, 王承尧 |
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(国防科技大学 航天与材料工程学院, 湖南 长沙 410073)
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| 摘要: |
| 通过求解预处理后的二维可压缩Euler方程，数值试验了常见的三种进口边界条件的提法及其对稳定性和收敛性的影响。数值试验结果表明，预处理后，在低马赫数时基于黎曼不变量的边界条件为反射边界条件，而另两种边界条件为无反射边界条件。 |
| 关键词: 预处理 边界条件 Euler方程 |
| DOI： |
| 投稿日期：2000-10-18 |
| 基金项目:中国科学院“九五”重点项目专题研究(KZ952-S1-405-2) |
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| Boundary Conditions for Solving Flowfields at Low Mach Numbers by Preconditioning |
| LIAO Shouyi, WANG Chengyao |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The influences of three common boundary conditions at low speed entrance on stability and convergence are present by solving 2-D compressible Euler equations that have been preconditioned. The test shows that by preconditioning the boundary condition based on the Riemann invariants at low Mach numbers is reflective boundary condition while the other two are unreflective boundary conditions. |
| Keywords: preconditioning boundary conditions Euler equations |
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