Real gas effects on the plasma sheath and the electromagnetic parameters of the reentry vehicle

Junhong LI; Junming LÜ; Wenbo MIAO; Xiaoli CHENG

doi:10.13224/j.cnki.jasp.20210124

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Real gas effects on the plasma sheath and the electromagnetic parameters of the reentry vehicle

Combustion,Heat and Mass Transfer | 更新时间：2025-03-14

- Real gas effects on the plasma sheath and the electromagnetic parameters of the reentry vehicle
- Journal of Aerospace Power Vol. 37, Issue 8, Pages: 1579-1586(2022)
- 作者机构：
  
  1.中国航天空气动力技术研究院空气动力理论与应用研究所，北京 100074
  2.中国航天科技集团有限公司航天飞行器气动热防护实验室，北京 100074
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.20210124
  CLC：
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Junhong LI, Junming LÜ, Wenbo MIAO, et al. Real gas effects on the plasma sheath and the electromagnetic parameters of the reentry vehicle[J]. Journal of Aerospace Power, 2022, 37(8): 1579-1586.
DOI：

Junhong LI, Junming LÜ, Wenbo MIAO, et al. Real gas effects on the plasma sheath and the electromagnetic parameters of the reentry vehicle[J]. Journal of Aerospace Power, 2022, 37(8): 1579-1586. DOI： 10.13224/j.cnki.jasp.20210124.

摘要

针对高速飞行器高超声速飞行环境，建立了热化学非平衡流动数值模拟技术，并对计算方法的可靠性进行了验证，接着开展了真实气体效应对飞行器等离子体鞘套及其电磁参数的影响规律分析。结果表明：飞行器物面中心线等离子体密度峰值与飞行试验符合良好；对于碰撞频率，沿滞止流线，双温模型以及Park反应模型对等离子体碰撞频率的影响趋势是一致的；对于相对介电常数，除激波附近，流场其他区域的实部接近1，激波附近小于1，虚部沿滞止流线逐渐升高；双温模型以及Park反应模型对相对介电常数实部和虚部的影响趋势是一致的。

Abstract

The numerical simulation technology of thermochemical non⁃equilibrium flow was established for aircraft hypersonic flight environment，the reliability of the calculation method was verified，and the influence law of high temperature real gas effect on plasma sheath and electromagnetic parameters in plasma was analyzed.The results showed:the numerical calculation results of aircraft peak plasma density on wall central line were in agreement with flight test results，as for the collision frequency，along the stagnation line，the two⁃temperature model and the Park reaction model had the same influence trend on the plasma collision frequency；for the relative dielectric constant，near the shock wave，the real part of other areas of the flow field was close to 1，and the imaginary part gradually increased along the stagnation line；The influence trend of the two⁃temperature model and the Park reaction model on the real and imaginary parts of the relative dielectric constant were consistent.

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references

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