Numerical study of the flow structures in flat plate and the wall-mounted hump induced by the unsteady DBD plasma

作     者：Jianyang YU Huaping LIU Ruoyu WANG Fu CHEN 俞建阳;刘华坪;王若玉;陈浮

作者机构：School of Energy Science and Engineering Harbin Institute of Technology Harbin 150001 People＇s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2017年第19卷第1期

页      面：57-63页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：supported by the Scientific Research Project Fund of Middle East Technical University under project # BAP-08-11-2016-044 

主　　题：DBD plasma flow structure large eddy simulations fluid dynamic 

摘      要：In this work,the dielectric-barrier-discharge plasma actuator was employed to study the flow structures induced by the plasma actuator over a flat plate and a wall-mounted hump.A phenomenological dielectric-barrier-discharge plasma model which regarded the plasma effect as the body force was implemented into the Navier–Stokes equations solved by the method of large eddy *** results show that a series of vortex pairs,which indicated dipole formation and periodicity distribution were generated in the boundary layer when the plasma was applied to the flow over a flat *** would enhance the energy exchanged between the near wall region and the free ***,their spatial trajectories are deeply affected by the actuation *** the actuator was engaged in the flow over a wall-mounted hump,the vortex pairs were also produced,which was able to delay flow separation as well as to promote flow reattachment and reduce the generation of a vortex,achieving the goal of reducing dissipation and decreasing flow resistance.