中文摘要：

等离子体气动激励诱导空气流动特性的测试诊断,是等离子体流动控制的重要基础。为了解等离子体气动激励的电特性,以及激励电压幅值和相位对诱导流动特性的影响,选取对称布局介质阻挡放电激励器进行了实验研究。结果表明：对称布局激励器的放电形式为丝状放电,均匀发生在高压电极周围,与非对称布局激励器的放电图像不同;当激励器相邻高压电极上施加电压的幅值和相位均相同时,诱导的定向射流向上垂直于激励器表面,速度为m/s量级;改变激励器高压电极上施加电压的幅值或相位,可以诱导产生向左上方或右上方的射流,但不能有效增大诱导气流速度。

英文摘要：

Diagnosis of the gas flow induced by plasma aerodynamic actuation is the basis of plasma flow control.We researched the electrical and flow characteristics of plasma aerodynamic actuation generated on symmetric dielectric barrier discharge actuator.The test results show that the discharge of symmetric actuator,which is generated around the high-voltage electrode,is different from that of asymmetric actuator.There are many fine and narrow pulsed currents at the positive half cycle of actuation voltage,showing that the discharge mode is diffusive but filamentary.The jet induced by plasma aerodynamic actuation is vertical to the actuator surface when the amplitude and phase of the voltage exerted on adjacent electrodes are the same.The maximum velocity of the jet is on the order of m/s.When the amplitude or the phase of the voltage exerted on adjacent electrodes is changed,the top-left or top-right jet is induced while the induced gas flow velocity can hardly be enhanced.