Rotating Detonation in High-speed Combustible Flows Using A ShockTunnel

对旋转爆轰波的起爆和传播进行了实验研究。激波风洞中反射激波后的试验气体通过孔板流入环形燃烧室，以澄清旋转爆震波稳定传播的条件。通过改变孔板两侧的压比，发现压比为7.5时可实现旋转爆轰，而压比为2.5时会导致回火。本文阐明了旋转爆轰波起爆稳定条件所需的压比。

An experimental study has been made on initiation and propagation of rotating detonation waves. A test gas behind a reflected shock wave in a shock tunnel flows into an annular combustion chamber through an orifice plate to clarify conditions of steady propagation of rotating detonation waves. By varying the pressure ratio across the orifice plate, it is found that rotating detonation is achieved for the pressure ratio of 7.5, whereas the pressure ratio of 2.5 results in flash-back. The present study clarifies the pressure ratio needed for stable condition for initiation of rotating detonation waves.