导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (S2): 192-203.doi: 10.7527/S1000-6893.2022.27747

Previous Articles     Next Articles

Reverse jet characteristics of plasma synthetic jet in hypersonic flow field

Zhengxue MA1, Zhenbing LUO1(), Aihong ZHAO2, Yan ZHOU1, Wei XIE1, Qiang LIU1, Yinxin ZHU1, Wenqiang PENG1   

  1. 1.College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China
    2.Science and Technology on Space Physics Laboratory,China Academy of Launch Vehicle Technology,Beijing 100076,China
  • Received:2022-07-01 Revised:2022-07-29 Accepted:2022-08-25 Online:2022-12-25 Published:2022-09-13
  • Contact: Zhenbing LUO E-mail:luozhenbing@163.com
  • Supported by:
    National Natural Science Foundation of China(12002377);National Science and Technology Major Project(J2019-Ⅲ-0010-0054)

Abstract:

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.

Key words: plasma synthetic jet, flow control, hypersonic incoming flow, reverse jet, penetration depth

CLC Number: