Title of Paper:Analysis of flow separation control using nanosecond-pulse discharge plasma actuators on a flying wing

Hits:

Affiliation of Author(s):航空学院

Journal:PLASMA SCIENCE & TECHNOLOGY

Key Words:nanosecond dielectric barrier discharge flying wing aircraft flow separation control

Abstract:Dielectric barrier discharge (DBD) plasma is one of most promising flow control method for its several advantages. The present work investigates the control authority of nanosecond pulse DBD plasma actuators on a flying wing model's aerodynamic characteristics. The aerodynamic forces and moments are studied by means of experiment and numerical simulation. The numerical simulation results are in good agreement with experiment results. Both results indicate that the NS-DBD plasma actuators have negligible effect on aerodynamic forces and moment at the angles of attack smaller than 16 degrees. However, significant changes can be achieved with actuation when the model's angle of attack is larger than 16 degrees where the flow separation occurs. The spatial flow field structure results from numerical simulation suggest that the volumetric heat produced by NS-DBD plasma actuator changes the local temperature and density and induces several vortex structures, which strengthen the mixing of the shear layer with the main flow and delay separation or even reattach the separated flow.

ISSN No.:1009-0630

Translation or Not:no

Date of Publication:2018-11-01

Co-author:李铮,杜海,孙琪杰,魏晨瑶,gxq

Correspondence Author:szw