超声速非平衡电离磁流体动力技术实验系统

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. 

Supersonic non-equilibrium ionization magnetohydrodynamictechnical experimental system

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 3.5 flow 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 18s and 650Pa, respectively. Besides, when tunnel works in typical conditions of CCRF discharge, the conductivity of plasma is estimated to be 1.27×10^-3S/m in supersonic air.