摘要
基于电弧放电物理过程,分析气动激励机理,建立用于电弧放电等离子体诱导激波数值模拟的爆炸丝传热模型.主要结论有:电弧放电等离子体气动激励的主要机理是热等离子体的热阻塞效应,热电弧放电对于超声速来流而言就像一个具有一定斜坡角度的虚拟突起;理论分析只适用于纵坐标较小的阶段;当传热的功率设为放电功率的10%时,本文所建立的模型能够用于电弧放电等离子体诱导激波的仿真研究;等离子体虚拟斜坡角度及其诱导激波角都随来流总压和速度的增大而减小,随着放电功率的增大而增大,在总压、速度和放电功率较小的阶段这种变化较明显,在总压、速度和放电功率较大的阶段这种变化较缓慢.
A mechanism model for arc discharge plasma is analyzed.An exploding wires diathermanous model for of arc discharge plasma incident shock was found.It shows that thermal mechanism dominating the shock wave control process is arc discharge plasma aerodynamic actuation.Effect of arc discharge plasma to supersonic flow field is a conform of protuberance with a bevel.The theoretical analysis is suit only for small y.The exploding wires diathermanous model is good for arc discharge plasma incident shock as diathermanous power rate is 10% of discharge power.The plasma wedge angle and incident shock angle decrease as total pressure and flow velocity increased,and they increase as average power of discharge increased.These variations are obvious at low total pressures,low flow velocities and low average powers.
出处
《计算物理》
EI
CSCD
北大核心
2012年第2期213-220,共8页
Chinese Journal of Computational Physics
基金
国家自然科学基金(51076168)资助项目
关键词
电弧放电
等离子体气动激励
诱导激波
爆炸丝传热模型
数值计算
arc discharge
plasma aerodynamic actuation
incident shock
exploding wires diathermanous model
numerical computation
