氩气电离非平衡等离子体气动效应数值模拟研究  

Numerical simulation study on the aerodynamic effect of argon non-equilibrium plasma ionization

作　　者：张维 陈雷[1] 封超[1] 宋鹏[2,3] 杨聪 曾文 ZHANG Wei;CHEN Lei;FENG Chao;SONG Peng;YANG Cong;ZENG Wen(Liaoning key Laboratory of Advanced Measurement and Test Technology for Aviation Propulsion System,Shenyang Aerospace University,Shenyang 110136,China;School of Energy and Power Engineering,Dalian University of Technology,Liaoning Dalian 116024,China;Key Laboratory of Intelligent Perception and Advanced Control of State Ethnic Affairs Commission,Dalian Minzu University Liaoning Dalian 116600,China)

机构地区：[1]沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室,沈阳100136 [2]大连理工大学能源与动力学院,大连116024 [3]大连民族大学智能感知与先进控制国家民委重点实验室,大连116024

出　　处：《沈阳航空航天大学学报》2018年第5期18-22,共5页Journal of Shenyang Aerospace University

基　　金：国家自然科学基金(项目编号:51509035;51409158);辽宁省自然科学基金重点项目(项目编号:20170540693)

摘　　要：结合自主设计的助燃激励器结构,在5400V电压条件下对氩气电离过程进行了数值模拟分析,得到了电子密度、活性粒子浓度、气体运动速度等随时间的变化规律。结果表明,电子密度在放电开始阶段迅速增加,之后逐渐下降,电子密度消失的速度从电离区间的中部向着两极逐渐减缓,最后急剧减少; Ar+离子浓度在放电开始后急剧增加,之后随着时间推移以每0. 01s降低一个量级的速度下降,当t=0. 35s时摩尔分数基本达到初始状态;等离子体对流场的扰动从放电开始的0. 005 m/s不断地波动式的减少,当总电场不能使放电继续产生时,等离子体的气动效应随即停止。Combined with the self-designed combustion boost actuator,an argon ionization process is numerically simulated under the 5400V voltage condition to obtain the changes of electron density,active particles concentration and gas velocity with time.The results show that the electron density increases rapidly at the beginning stage of discharge,and then decreases gradually.The velocity of the electron density gradually decreases from the middle of ionization interval to the electrode,and finally decreases sharply.The concentration of Ar+ions increases significantly after the discharge starts,and then decreases with one order of magnitude per 0.01s.Mole fraction basically reaches the initial state when t=0.35 s.The disturbance of the plasma to the flow field decreases persistently from 0.005 m/s at the beginning stage of discharge.The aerodynamic effect of the plasma stops until the total electric field could not continue to discharge.

关 键 词：非平衡等离子体 气动效应 数值模拟 氩气电离 

分 类 号：TM832[电气工程—高电压与绝缘技术]