计算物理 ›› 2015, Vol. 32 ›› Issue (1): 27-32.

• 论文 • 上一篇    下一篇

再入飞行器等离子体预测与气体组分相关性

苗文博, 黄飞, 程晓丽, 俞继军   

  1. 中国航天空气动力技术研究院, 北京 100074
  • 收稿日期:2013-12-30 修回日期:2014-04-11 出版日期:2015-01-25 发布日期:2015-01-25
  • 作者简介:苗文博(1980-),男,博士,高级工程师,主要从事非平衡流研究,E-mail:tingles@126.com

Plasma Prediction of Reentry Vehicle and Gas Components

MIAO Wenbo, HUANG Fei, CHENG Xiaoli, YU Jijun   

  1. China Academy of Aerospace and Aerodynamics, P. O. Box 7201-16, Beijing 100074, China
  • Received:2013-12-30 Revised:2014-04-11 Online:2015-01-25 Published:2015-01-25
  • Contact: 黄飞(1982-),高级工程师,E-mail:huang05013@163.com

摘要: 对一类大钝头再入飞行器,理论分析电子密度预测与气体组分的相关性,使用经验证的数值模拟方法研究化学反应模型对等离子体预测的影响.研究发现:马赫数是影响等离子体预测与气体组分相关性的重要参数,马赫数越高,不同气体组分模型所得电子密度差异越大.气体组分模型对等离子体预测的影响在驻点强压缩区域和身部位置基本一致.对于大钝头再入飞行器,高度H=60 km,马赫数大于23时应该采用11组分化学反应模型.

关键词: 再入飞行器, 等离子体, 气体组分, 化学反应模型, 数值模拟

Abstract: Hypersonic flows around a blunt body are studied with numerical simulation and theoretical analysis.Correlations between plasma prediction and gas components are obtained.It shows that it is Mach number which affects the peak number density of electrons.Numerical simulation agrees with theoretical analysis well.Differences between two gas models get greater as Mach number increases.The differences follow same trend at back taper with stagnation region.A 11-species chemical model should be applied to increase accuracy when reentry capsule flight at height of 60 km and Mach number is over 23.

Key words: reentry vehicle, plasma, gas components, chemical reaction model, numerical simulation

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