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本文介绍了用于研究平面运动激波与头激波迎面相互作用的电控双驱动激波管技术。研究成功的用电容高压放电破膜(聚脂薄膜)技术,破膜时间可控制在100微秒左右,破膜重复性为±50微秒;提出了同时测量和记录管内前后两道运动激波的速度,以及两激波间时间间隔的方法;并以第二激波作为纹影照相的同步信弓,实现了±2微秒的同步精度,从而用单火花和双火花纹影系统获得了双波迎面相互作用的流场照片。
This paper presents an electronically controlled double-drive shock tube technique for studying the on-line interaction between a planar shock wave and a head shock wave. With the successful research on high voltage discharge membrane (mylar) technique, the rupture time can be controlled to about 100 microseconds and the rupture membrane repeatability is ± 50 microseconds. A new method is proposed to measure and record the shock waves And the time interval between the two shocks. The second shock wave was used as the sync bow for smearing, which achieved the synchronization accuracy of ± 2 microseconds, so the single spark and double spark pattern systems were obtained Two-wave frontal interaction flow photo.