关键词: 等离子体, 激波, 超音速风洞, 介质阻挡放电, 直流放电

Abstract: Results of recent experiments on the influence of specially organized electrical discharges on the structure of the shock waves in a supersonic wind tunnel were presented and discussed. Two discharge types were explored: dielectric barrier discharge and transverse DC surface discharge. The results show that the dielectric barrier discharge (DBD) can change the boundary layer. The intension of the shock waves decreases as the discharge obeys the flows. And it increases as the discharge disobeys the flows. In contrast to the dielectric barrier discharge plasma, the shock can be considerably weakened by transverse DC discharge plasma.

Key words: Plasma, Shock waves, Supersonic wind tunnel, DBD, DC discharge