活塞式无膜激波管特性的实验研究

Experimental Investigation of a PistonTyped Diaphragmless Shock Tube

本文在自行研制的无膜激波管中，实验研究了不同快速卸压装置对该激波管运行特性的影响。通过控制高压段充气压力和测量压力波形，得到了高低压段压比和激波马赫数的关系曲线以及在测压点处形成激波所需的最低压比。实验结果表明排气快慢对激波形成距离和所形成激波的强度产生很大的影响。对不同装置产生的结果差异进行了一定的分析。

The performance of a pistontyped shock tube worked with some different types of fastopening setup was studied. To Examine the formation of shock waves in the tube, pressure measurement at the driven section was carried out for a series of pressure values in the driving section, and the relationship between the pressure ratio and the shock Mach number induced is obtained. It was found that the fastopening setup plays an important role both in the formation of shock waves and in the strength of shock waves generated. Some explanation for the difference in the performance of the shock tube caused by the different types of fastopening setup was given.