AC和AC-DC两种电源对不同多级等离子体激励器的激励效果研究

Study on the Effect of Different Multi-DBD Plasma Actuators by AC Power Supply and AC-DC Power Supply

采用AC和AC-DC两种不同电源,研究电源对不同多级等离子体激励器的激励效果,实验采用粒子图像测速(PIV)技术进行流场显示测量,结果表明:随着电极组的数量增加,AC电源和AC-DC电源的最优频率随之降低,对于相同电极组数,AC电源的最优频率大于AC-DC电源。在一定电压范围内,随着电压的增大,AC电源和AC-DC电源对不同多级等离子体激励器的激励效果均增大。相同电压时,随着电极组的数量增加,两种电源的激励效果均增大。在相同电压和相同电极组数时,AC-DC电源的激励效果要好于AC电源。

In this paper,AC power supply and AC-DC power supply were used to study the effect of power supply on the excitation of different multistage plasma actuators,the flow field display measurement was carried out by particle image velocimetry(PIV)technology.The results shows:when the number of electrode groups is increased,the optimum frequency of the AC power supply and the AC-DC power supply is reduced.For the same number of electrodes,the optimum frequency of the AC power supply is greater than that of the AC-DC power supply.In a certain voltage range,the excitation effect of AC power supply and AC-DC power supply on different multistage plasma actuators increases with the increase of voltage.When the number of electrode groups increases and the voltage remains same,the excitation effect of two kinds of power supply increases.When the voltage and electrode group are the same,the excitation effect of AC-DC power supply is better than AC power supply.