燃气射流起始冲击波场形态的实验研究

介绍利用激光摩尔偏折仪和压阻式压力传感器对发动机喷流起始冲击波的基本形态进行的研究． 研究结果验证了在燃气流团前存在着起始冲击波及发展初期具有非球面的特性，并提出了喷口起始冲击波波阵面发展的新结构，对前人有关起始冲击波发展结构的研究结果进行了修正．

An Experimental Study on the Initial Shock Wave Structure of Exhaust Flow Field

By using laser Moire Deflectometry and piezoresistance pressure sensors the basic structure of initial shock wave caused by exhausted flow field is studied. The study shows that the initial shock wave exists in front of the exhaust flow and in its initial stage it has a concave center. A new theory for the developing structure of initial shock wave front is also put forward in this paper.