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为研究纳秒脉冲等离子体气动激励控制平板附面层的作用机理以及不同参数下的变化规律,利用自行研制的速度测量系统对纳秒脉冲等离子体气动激励诱导的气流速度进行了测量,结果表明:不同的激励组合方式下,等离子体气动激励效果不同,介质阻挡放电产生的效果最好;纳秒脉冲等离子体激励诱导气流加速的效果随激励电压的增大而增强,其作用于低速气流的效果强于高速气流;纳秒脉冲等离子体气动激励诱导射流方向与壁面有一定夹角;沿下游方向,等离子体气动激励诱导气流加速效果明显减弱。
In order to study the action mechanism of the pneumatically actuated nano-second pulse plasma control panel and its variation under different parameters, the gas velocity induced by the pneumatically excited nanosecond pulse plasma was measured by a self-developed velocity measurement system. The results show that In the different excitation modes, the effect of plasma aerodynamic excitation is different, and the dielectric barrier discharge produces the best effect. The effect of nanosecond pulsed plasma excitation to induce air flow acceleration increases with the excitation voltage, which acts on low-speed airflow The effect is stronger than that of high-speed airflow. The aerodynamic stimulus of nanosecond pulse plasma induces a certain angle between the direction of the jet and the wall. Along the downstream direction, the aerodynamic acceleration of the plasma induced by the plasma accelerates obviously.