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Experimental study on shock-shock interaction over double wedge controlled by surface arc plasma array
Contributions to Plasma Physics ( IF 1.6 ) Pub Date : 2022-08-15 , DOI: 10.1002/ctpp.202200062
Yakang Kong, Jun Li, Yun Wu, Hua Liang, Shanguang Guo, Hesen Yang

The Mach 8 hypersonic shock-shock interaction (SSI) over a double wedge controlled by the improved high-energy surface arc discharge array (H-SADA) have been investigated with high-speed schlieren imaging. The H-SADA with 10 actuators is installed on the first wedge to deposit energy into the hypersonic flow. In the hypersonic double wedge flow, the arrays of blast wave and thermal bubble induced by H-SADA successively develop into a bump virtual profile and a wedge virtual profile, and the former makes complex SSI structure evolve into a bow shock, the latter makes it evolve into an oblique shock. Under the control of single discharge pulse, the disappearance process and the reconstruction process of SSI structure occur successively, and the whole process lasts for 0.2 ms. The H-SADA works stably at frequency of 500 Hz in hypersonic flow, and there is little difference in the control process of each pulse, which means that the SSI structure disappears for 0.2 ms every 2 ms.

中文翻译:

面弧等离子体阵列控制的双楔上冲击-冲击相互作用的实验研究

通过高速纹影成像研究了由改进的高能表面电弧放电阵列 (H-SADA) 控制的双楔上的 8 马赫高超声速冲击-冲击相互作用 (SSI)。带有 10 个执行器的 H-SADA 安装在第一个楔块上,用于将能量沉积到高超声速流中。在高超声速双楔流中,H-SADA诱发的冲击波阵列和热泡阵列依次发展为凹凸虚剖面和楔形虚剖面,前者使复杂的SSI结构演变为弓形激波,后者使其演变成斜向冲击。在单次放电脉冲的控制下,SSI结构的消失过程和重构过程相继发生,整个过程持续0.2 ms。H-SADA 在 500 Hz 的频率下在高超声速流中稳定工作,
更新日期:2022-08-15
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