%0 Journal Article
%T Numerical study of plasma aerodynamic actuation mechanism<br>等离子体气动激励机理数值研究
%A Cheng Yu-Feng
%A Nie Wan-Sheng
%A Li Guo-Qiang
%A <br>程钰锋
%A 聂万胜
%A 李国强
%J 物理学报
%D 2012
%I 
%X Based on the physical processes of dielectric barrier discharge (DBD) and quasi-direct-current (quasi-DC) discharge, the plasma aerodynamic actuation mechanism is analyzed, then the numerical model of plasma aerodynamic actuation is founded, finally the DBD and the quasi-DC discharge plasma flow control processes are simulated in the cases of low velocity and high velocity. The results show that the aerodynamic actuation mechanism of DBD plasma is that the discharge changes three kinds of forces in continuum fluent medium, these being shear stress caused by Newton friction, body force caused by electro hydrodynamic and impulsive active force caused by pressure change, and the main aerodynamic actuation mechanism of DBD plasma is body force caused by electro hydrodynamic. The effect of body force is stronger in near space than in the sea level, plasma induced flow velocity increases in near space. The main aerodynamic actuation mechanism of quasi-DC discharge plasma in supersonic air flow is the thermal mechanism of heat plasma, the exploding wires diathermanous model found in this paper is good for the simulation of the process of surface quasi-DC discharge plasma incident shock. The effect of quasi-DC discharge plasma on the supersonic flow field is conform with the effect of protuberance with a bevel to the supersonic flow field, so it can be used to control the shock wave in supersonic aircraft.
%K plasma aerodynamic actuation mechanism
%K dielectric barrier discharge
%K quasi-direct-current discharge<br>等离子体气动激励机理
%K 介质阻挡放电
%K 准直流电弧放电
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=790A9358A1C1D6557BA051773B7CCE46&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=B31275AF3241DB2D&sid=05585245A7207A76&eid=05585245A7207A76&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=26