摘要
使用泊松方程、漂移-扩散模型和N-S方程对介质阻隔面放电等离子体控制边界层流动进行了一体化数值模拟。仿真结果表明介质阻隔面放电等离子体通过推-拉空气可以对低速气流进行控制,正向推力和反向拉力均可以在距壁面一定高度处形成射流,正向射流自身增加边界层动量,更重要的是通过引射主流将主流中的能量输运到边界层中,从而减小边界层厚度;反向射流与来流相撞后形成回流区将边界层向外推,能够增加边界层厚度。
The boundary layer flow control using dielectric barrier surface discharge plasma is simulated using Poisson＇s equation, drift-diffusion model and N-S equations. The results show that the dielectric barrier surface discharge plasma can control slow airflow by pushing-pulling air. Both the positive push force and negative pull force can produce jet above the wall. The positive jet would reduce the thickness of boundary layer by transferring the momentum of the main flow to the boundary layer and plasma bulk force working. The negative jet could block off the boundary layer flow and form circumfluence region, so the boundary layer thickness would increase.
出处
《空气动力学学报》
EI
CSCD
北大核心
2010年第3期279-284,共6页
Acta Aerodynamica Sinica
基金
国家自然科学基金(50576105)
关键词
介质阻隔面放电
平均静电场力
边界层
流动控制
推-拉
dielectric barrier surface discharge
average electrostatic force
boundary layer
flow control
push-pull
