介质材料对大气压沿面介质阻挡放电等离子体激励器产生的最大离子风速的影响

Effect of dielectric material on the maximum ionic wind velocity induced by atmospheric surface dielectric barrier discharge plasma actuator

对两种不同介质材料的介质阻挡放电等离子体激励器在不同峰峰值电压下所诱导的最大离子风速分别进行了测量.实验结果表明,当峰值电压较低时,介质板介电常数较低的激励器所诱导的最大风速要小于介质板介电常数较高的激励器诱导的最大风速,但随着峰值电压的继续增大,具有低介电常数的激励器所诱导的最大风速较大.这主要是因为低介电常数能够显著提高最大可施加电压而不会导致流光放电的产生.

The maximum ionic wind velocity induced by dielectric barrier discharge actuators with different dielectric materials under different peak- peak voltages are measured,respectively. The experimental results show that,when the peak voltages are lower,the maximum wind velocity induced by the actuator with lower dielectric constant material is lower than that by the actuator with higher dielectric constant material. However,as the peak voltage continues to increase,the induced maximum velocity by actuator with lower dielectric constant material is higher. This is mainly because a lower dielectric constant can allow operation of the actuator at higher voltage without giving rise to streamer formation.