Abstract The interaction between a ramp induced shock wave and a plasma synthetic jet actuator (PSJA) array was experimentally investigated using high-speed schlieren imaging technique. The PSJA array consisting of 10 actuators was driven by only one power supply. To enhance the actuation intensity, the actuators were located along the streamwise direction to form an accumulation effect. Experimental results showed that the plasma synthetic jet can penetrate into the supersonic flow field with a depth of more than 10 mm. Both the induced shock and the controlling gas bulbs generated by PSJA array can affect the shock wave. The separation shock wave bifurcates when interacting with the shock induced by the actuator. The foot portion of the separation shock wave disappeared when the controlling gas bulbs passed through the interaction region. What's more, as the actuators were located in streamwise direction, the controlling gas bulbs were completely emerged as a much larger gas bulb. As a result, the effective control time was longer than the single actuator and the control effect is also much better.

中文翻译：

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基于单电源驱动等离子体合成射流致动器阵列的激波控制实验研究

摘要 使用高速纹影成像技术对斜坡感应激波与等离子体合成射流致动器 (PSJA) 阵列之间的相互作用进行了实验研究。由 10 个执行器组成的 PSJA 阵列仅由一个电源驱动。为了增强驱动强度，驱动器沿流向布置以形成累积效应。实验结果表明，等离子体合成射流可以穿透深度超过10 mm的超音速流场。PSJA 阵列产生的感应激波和控制气泡都会影响激波。当与致动器引起的冲击相互作用时，分离冲击波分叉。当控制气球通过相互作用区时，分离激波的底部消失。更重要的是，由于执行器位于流向，控制气灯泡完全呈现为一个更大的气灯泡。因此，有效控制时间比单个执行器长，控制效果也好得多。