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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (7): 124547-124547.doi: 10.7527/S1000-6893.2020.24547

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Numerical investigation of nozzle flow separation control using plasma actuation

LI Chengcheng1,2, LI Fang3, YANG Bin1,2, WANG Ying1,2   

  1. 1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200039, China;
    2. Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 200039, China;
    3. Beijing Aerospace System Engineering Research Institute, Beijing 100076, China
  • Received:2020-07-17 Revised:2020-08-04 Published:2020-10-23
  • Supported by:
    Natural Science Foundation of Shanghai (21ZR1462000); Shanghai Rising-star Pragram(19QC1400200)

Abstract: To study the control effect of the plasma actuator on nozzle separated flow, we use a phenomenological model simulating the effect of plasma excitation to numerically study the suppression effect of dielectric barrier discharge plasma and arc discharge plasma on the nozzle separated flow. The effect of different discharge thermal power densities and discharge positions of arc discharge plasma on the suppression effect is further explored. The results show that the arc discharge plasma has a better effect on suppression of nozzle separated flow. When the arc discharge plasma actuator acts on the upstream of the interaction zone of the shock wave and boundary layer, the suppression effect on the flow separation is the best; when the thermal power density of the arc discharge is small, the generated inducing jet velocity is too small to easily influence the flow field of the separation zone; when the thermal power density of the arc discharge is 8×1010 W/m3, the separation reflux area of the nozzle completely disappears.

Key words: supersonic nozzle, plasma, separated flow, flow control, numerical simulation

CLC Number: