| 姿控发动机内流场及高空羽流流场的DSMC一体化数值模拟 |
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| 引用本文： | 黄琳,陈伟芳,吴其芬,任兵.姿控发动机内流场及高空羽流流场的DSMC一体化数值模拟[J].空气动力学学报,2001,19(4):383-387. |
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| 作者姓名： | 黄琳 陈伟芳 吴其芬 任兵 |
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| 作者单位： | 国防科学技术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项目编号 (1990 2 0 2 1) |
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| 摘 要： | 通过引入“平衡抽样方法”有效解决了DSMC求解近连续流区所遇到的碰撞顶计算效率问题;对于过渡流及自由分子流区,构造了适合于DSM仿真的分子碰撞传能模型并配置了一种光滑过渡以减少误差的权函数。在此基础上首次实现了对姿控发动机喷管内流场及包括倒流区在内的高空弱流流场的DSMC方法一体化数值模拟。
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| 关 键 词： | 平衡抽样方法 高空羽流流场 DSMC方法 一体化数值模拟 姿控发动机 航天器 |
| 文章编号： | 0258-1825(2001)04-0383-05 |
| 修稿时间： | 2000年11月30 |
The overall numerical simulation of both high-altitude plume flowfield and inflow region with DSMC method |
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| HUANG Lin,CHEN Wei fang,WU Qi fen,REN Bing.The overall numerical simulation of both high-altitude plume flowfield and inflow region with DSMC method[J].Acta Aerodynamica Sinica,2001,19(4):383-387. |
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| Authors: | HUANG Lin CHEN Wei fang WU Qi fen REN Bing |
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| Abstract: | The "equilibrium sampling method" is adopted to overcome the main problem of large computational cost confronted by molecular collision calculation when applying DSMC method to near continuum region. In translational and free molecular region, a molecular energy transfer model suited to DSMC method is constructed and a smooth weight function is designed to decrease calculation fluctuation. With above modified technique, the overall numerical simulation of both high altitude plume flowfield and inflow region with DSMC method is successfully realized. |
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| Keywords: | equilibrium sampling method high altitude plume flowfield DSMC method |
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