摘要
介绍了超声速非平衡电离磁流体动力技术实验系统的设计思想和组成,设计、制作了马赫数为3.5的吸气式双喉道风洞,采用以陶瓷板为阻挡介质的电容耦合射频阻挡放电,实现了超声速流场中大体积、连续、稳定、均匀等离子体的产生.主要结论有:实验测试风洞稳定工作时间为18s,稳定运行时实验段静压为650Pa;电容耦合射频放电典型工作状态下,通过伏安诊断法测出超声速条件下等离子体的电导率为1.27×10-3S/m.
Design methods and composition of supersonic non-equilibrium ionization magnetohydrodynamic（MHD）technical experimental system were introduced;the aspirated double-throat wind tunnel operated in Mach number 3.5flow was designed and made.The large-scale,stable and uniform plasma was obtained continuously in supersonic flow through the capacitively coupled radio-frequency（CCRF）barrier discharge,in which the ceramic plate was taken as the barrier dielectric.Main conclusions are made as follows：the stable working time of the wind tunnel and the static pressure of experimental section are approximately 18 sand 650Pa,respectively.Besides,when tunnel works in typical conditions of CCRF discharge,the conductivity of plasma is estimated to be 1.27×10-3 S/m in supersonic air.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2015年第8期2025-2032,共8页
Journal of Aerospace Power
基金
国家自然科学基金(11372352)
国家自然科学基金(51306207)
陕西省自然科学基金(2013JQ1016)
关键词
超声速
磁流体
非平衡电离
吸气式风洞
电容耦合射频放电
电导率
supersonic
magnetohydrodynamic（MHD）
non-equilibrium ionization
aspirated wind tunnel
capacitively coupled radio frequency discharge
conductivity
