[1]卫丽云,王学德.高超声速飞行器电离反应流场特性研究[J].弹道学报,2020,32(02):88.[doi:10.12115/j.issn.1004-499X(2020)02-014]
 WEI Liyun,WANG Xuede.Study on Flow Field Characteristics of Ionization Reactionof Hypersonic Vehicle[J].Journal Of Ballistics,2020,32(02):88.[doi:10.12115/j.issn.1004-499X(2020)02-014]
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高超声速飞行器电离反应流场特性研究()
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《弹道学报》[ISSN:1004-499X/CN:32-1343/TJ]

卷:
32
期数:
2020年02期
页码:
88
栏目:
出版日期:
2020-06-30

文章信息/Info

Title:
Study on Flow Field Characteristics of Ionization Reactionof Hypersonic Vehicle
文章编号:
1004-499X(2020)02-0088-09
作者:
卫丽云王学德
南京理工大学 能源与动力工程学院,江苏 南京 210094
Author(s):
WEI LiyunWANG Xuede
School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
关键词:
高超声速飞行器 电离反应 电子激发能 轴对称流场
Keywords:
hypersonic vehicle ionization reaction electronic excitation energy axisymmetrical flow field
分类号:
V211
DOI:
10.12115/j.issn.1004-499X(2020)02-014
文献标志码:
A
摘要:
将电离反应按照反应机理的不同进行分类,采用不同的化学反应发生判据将其引入DSMC中,研究了基于分子水平的电离流场特性。通过对比不同组分流场的计算结果,发现引入电离反应会使流场整体温度和热流密度变小,且流场中的电子大多集中在飞行器头部。通过对比不同电离反应对流场特性的影响,发现联合电离反应是所有电离反应发生的基础; 电子激发电离反应对流场游离电子的生成有促进作用,而置换电离反应对游离电子的生成有抑制作用; 但后2种电离反应都会减弱飞行器表面的热流密度。
Abstract:
The ionization reactions were divided into three sections according to different reaction mechanisms,and they were introduced into DSMC with different criteria for the occurrence of chemical reactions. The influence of ionization reaction on the aerodynamic characteristics of hypersonic vehicle was studied,and different calculation results derived from different flow fields composed of different species were compared. Most of the electrons concentrate at the head of the vehicle in the flow field. The flow field temperature and the heat flux get a sharp decrease after introducing ionization reactions. The effects of different ionization reactions on the characteristics of the flow field were compared. The associative ionization is the basis of all ionization reactions,and the electron-excitation ionization can promote the formation of free electrons in the flow field,but the charge exchange reaction do just the opposite,whereas both of the two kinds of ionization can weaken the heat flux on the surface of the hypersonic vehicle.

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备注/Memo

备注/Memo:
收稿日期:2020-04-01
基金项目:江苏省青蓝项目资助项目; 国家留学基金委出国留学资助项目
作者简介:卫丽云(1995- ),女,硕士研究生,研究方向为高超声速稀薄流气体动力学。E-mail:1021919652@qq.com。
通讯作者:王学德(1977- ),男,副教授,博士,研究方向为稀薄气体动力学。E-mail:wangxuede2000@njust.edu.cn。
更新日期/Last Update: 1900-01-01