Numerical simulation of flow field around hypersonic vehicle at different reentry heights

被引：0

作者：

Ouyang W. ^{[1
]}

Liu Y. ^{[1
]}

Deng W. ^{[1
]}

Wang J. ^{[1
]}

机构：

[1] School of Aerospace Science and Technology, Xidian University, Xi'an

来源：

Hangkong Dongli Xuebao/Journal of Aerospace Power | 2019年 / 34卷 / 12期

关键词：

Average temperature; Collision frequency; Electron number density; Reentry height; Total pressure;

D O I：

10.13224/j.cnki.jasp.2019.12.009

中图分类号：

学科分类号：

摘要：

Based on the axisymmetric N-S equation and the 7-component 18 chemical reaction, the flow fields around the RAMC-Ⅱ vehicle at the reentry height between 20km to 90km were numerically simulated and the algorithm was verified. Not only was the electron number density distribution calculated, but also the collision frequency, average temperature and total pressure distribution at different reentry heights were given. The analysis showed that the electron number density inecreased first and then decreased with the increasing reentry height. When the reentry height was constant, the electron number density decreased with the axial direction, and the Gaussian distribution was consistent along the direction perpendicular to the surface of the vehicle. The maximum value of collision frequency decreased with the increase of the reentry height. When the reentry height was constant, the collision frequency decreased in the axial direction. The maximum average temperature at the same reentry height gradually decreased with the axial distance. The maximum total pressure decreased with the increase of reentry height, and the maximum total pressure decreased with the axial distance at the same reentry height. © 2019, Editorial Department of Journal of Aerospace Power. All right reserved.

引用

页码：2608 / 2615

页数：7

共 23 条

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