多相等离子体气动激励流动特性

Airflow characteristic of multiphase plasma aerodynamic actuation

等离子体激励器电极组相位不同便产生多相等离子体气动激励,建立了粒子图像测速仪流场参数测试系统,利用粒子图像测速仪技术,研究了非对称布局等离子体气动激励诱导空气流动特性,分析了多相等离子体气动激励对诱导空气流动速度的影响。结果表明:粒子图像测速仪流场测试系统能够准确地反映等离子体气动激励诱导空气流动的流场空间结构,等离子体气动激励诱导空气流动是平行于激励器的近壁面射流,多相等离子体气动激励能够增大等离子体气动激励诱导气流速度,或者使等离子体气动激励影响流场区域增大。粒子图像测速仪系统是深入研究等离子体气动激励的流场结构最佳的方式之一。

Multiphase plasma aerodynamic actuation is produced when the phases of the plasma electrodes are different.A system of particle image velocimetry（PIV） was established,and the experimental study on the characteristic of plasma aerodynamic actuation with dissymmetrical configuration as well as the velocity of the airflow induced by multiphase plasma aerodynamic actuation was performed by PIV technique.The result indicates that,the spatial structure of the airflow field based on plasma aerodynamic actuation could be accurately reflected with PIV technique.The direction of the injection flow induced by plasma aerodynamic actuation is parallel to the actuator surface,and the velocity of the induced flow increases or the flow field extends while the phases of the plasma electrodes are regulated.