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针对作用在顶角为20°的圆锥-圆柱组合体模型头上的带占空循环的等离子体激励进行了机理性研究。实验使用单电极介质阻挡放电(SDBD)等离子体激励器进行激励控制,压力动态传感器进行测量。在实验段为3.0 m×1.6 m的低湍流风洞中进行,实验攻角是45°。基于圆锥体底部直径的雷诺数为50 000。占空循环的频率为10 Hz。对不同占空循环比率下的相位锁定压力分布的收敛性和显著特征进行了研究,并将其与整体平均压力分布做了详细比较。
A mechanistic study of plasma excitation with duty cycles on a cone-cylinder assembly head with a 20 ° apex angle was performed. Experiments using a single electrode dielectric barrier discharge (SDBD) plasma actuator excitation control, pressure dynamic sensors to measure. In the experimental section of 3.0 m × 1.6 m low turbulence wind tunnel, the experimental angle of attack is 45 °. The Reynolds number is 50 000 based on the cone base diameter. The frequency of the duty cycle is 10 Hz. The convergence and salient features of the phase-locked pressure distribution under different duty cycle ratios were studied and compared with the overall average pressure distribution in detail.