The paper presents the results of experimental study of disturbances generated by an electric discharge. Observations are carried out in the zone of interaction of a shock wave and a boundary layer (the incident shock wave has the Mach number M = 1.43). Experiments were carried out in a supersonic wind tunnel with the unit Reynolds number Re1 = 11·10⁶ 1/m. The flow velocity was measured using the PIV method and hot-wire method. The artificial disturbances are generated by a periodic pulsed electric discharge; the discharge is allocated at the model surface upstream of the interaction zone. The discharge time is less than 100 ns: this enables creating a broadband disturbance inside the boundary layer. The method of phase-locked measurement with the ensemble averaging of realizations produces the spatial and temporal characteristics of disturbances generated in the interaction zone. The major growth of initial disturbances occurs in the shear layer behind the shock wave/boundary layer interaction zone (here the flow becomes turbulent).

本文介绍了放电产生的干扰的实验研究结果。观测是在冲击波和边界层相互作用的区域进行的（入射冲击波的马赫数 M = 1.43）。实验在超声速风洞中进行，单位雷诺数Re1=11·10 ⁶ 1/m。使用PIV法和热线法测量流速。人为干扰是由周期性脉冲放电产生的；放电分配在相互作用区上游的模型表面。放电时间小于 100 ns：这使得能够在边界层内产生宽带扰动。具有实现的整体平均的锁相测量方法产生相互作用区域中产生的扰动的空间和时间特征。初始扰动的主要增长发生在冲击波/边界层相互作用区后面的剪切层中（此处流动变成湍流）。