A model for Nanosecond Pulsed Dielectric Barrier Discharge(NSDBD)actuator and its investigation on the mechanisms of separation control over an airfoil

作     者：CHEN ZhenLi HAO LinZhao ZHANG BinQian 

作者机构：School of AeronauticsNorthwestern Polytechnical University 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2013年第56卷第5期

页      面：1055-1065页

核心收录：

学科分类：08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.10972236 50906100) 

主　　题：plasma Nanosecond Pulsed Dielectric Barrier Discharge (NSDBD) flow control flow separation numerical simulation 

摘      要：In order to simulate the flow control problem by using Nanosecond Pulsed Dielectric Barrier Discharge(NSDBD),a one-zone inhomogeneous phenomenological model is constructed based on the experimental and theoretical *** model is coupled with the unsteady Navier-Stokes equations,which can well predict the compression-expansion wave structures and wave speed compared with experimental results and can be applied to the simulation of the flow control by using *** model is adopted to investigate the separation control over NACA0015 airfoil using the NSDBD plasma *** separation-control mechanisms are revealed that the spanwise vortices produced by the plasma actuation play the key *** plasma actuation can produce a spanwise vortex around the separation point near the leading *** spanwise vortices make the separated free-shear layer unstable and shed away,move downstream along the upper wall,control the flow near the wall,and bring outer flow with high kinetic energy into the near wall region to realize the effective separation control over the upper surface of the airfoil.