ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Reverse jet characteristics of plasma synthetic jet in hypersonic flow field
Received date: 2022-07-01
Revised date: 2022-07-29
Accepted date: 2022-08-25
Online published: 2022-09-13
Supported by
National Natural Science Foundation of China(12002377);National Science and Technology Major Project（J2019-Ⅲ-0010-0054）
To study the flow field characteristics of the reverse plasma synthetic jet under hypersonic conditions， experimental and numerical studies were carried out. In the hypersonic incoming flow with Mach number 8， the flow field variation of the reverse plasma synthetic jet was analyzed by comparing the schlieren and exciter outlet pressure monitoring results in the experiment and simulation. It is verified that under hypersonic conditions， the outlet pressure oscillation of the reverse plasma synthesis jet actuator is caused by multiple jets generated by multiple backfilling in the cavity， causing multiple shocks to sweep over the actuator outlet. The plasma synthesis jet increases the mass flow of the gas outside the jet area， while the precursor shock propagating upstream merges with the bow shock wave into a single shock. The vortex rings produced under the action of high-momentum jets， the low-pressure regions created by counter-currents， and the high-temperature low-density plasma jets reduce the local Mach number， resulting in an increase in the shock penetration depth.
Zhengxue MA , Zhenbing LUO , Aihong ZHAO , Yan ZHOU , Wei XIE , Qiang LIU , Yinxin ZHU , Wenqiang PENG . Reverse jet characteristics of plasma synthetic jet in hypersonic flow field[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022 , 43(S2) : 192 -203 . DOI: 10.7527/S1000-6893.2022.27747
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