| 基于ALE方程及嵌入网格法的膛ロ流场数值模拟 |
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| 引用本文： | 姜孝海,李鸿志,范宝春,陈志华.基于ALE方程及嵌入网格法的膛ロ流场数值模拟[J].兵工学报,2007,28(12):1512-1515. |
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| 作者姓名： | 姜孝海 李鸿志 范宝春 陈志华 |
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| 作者单位： | 南京理工大学弹道重点实验室，江苏南京210094 |
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| 基金项目： | 国防科技重点实验室基金 |
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| 摘 要： | 采用基于ALE( Arbitary Lagrangian-Eulerian)方程的动网格和嵌入网格法及二阶精度Roe方法，对膛口流场进行了数值模拟。根据数值结果，详细讨论了初始流场、火药燃气流场的形成与发展以及与弹丸的耦合和相互作用过程，并与膛口流场的实验阴影照片进行了对照，两者在定性上是吻合的。
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| 关 键 词： | 流体力学 膛口流场 数值模拟 实验阴影 动力学过程 |
| 文章编号： | 1000-1093（2007）12-1512-04 |
| 收稿时间： | 2006-06-27 |
| 修稿时间： | 2006年6月27日 |
Numerical Simulation of Muzzle Flow Field Based on ALE Equation and Chimera Grids |
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| JIANG Xiao-hai,LI Hong-zhi,FAN Bao-chun,CHEN Zhi-hua.Numerical Simulation of Muzzle Flow Field Based on ALE Equation and Chimera Grids[J].Acta Armamentarii,2007,28(12):1512-1515. |
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| Authors: | JIANG Xiao-hai LI Hong-zhi FAN Bao-chun CHEN Zhi-hua |
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| Affiliation: | Key Laboratory of Ballistics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China |
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| Abstract: | The muzzle flow field was simulated numerically by chimera grids and dynamic mesh based on ALE (Arbitary Lagrangian-Eulerian) equations and second-order precision Roe scheme. From the predicted results, the interactions among precursor flow field, muzzle blast flow field and high-speed projectile were discussed in detail. And a good qualitative agreement between the distributions of the predicted density gradient and the experimental shadowgraph was obtained. |
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| Keywords: | fluid mechanics muzzle flow field numerical simulation experimental shadowgraph dynamic process |
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