Aerodynamic actuation characteristic research of array plasma synthetic jet actuator

An array PSJA is tested in this paper by using high-speed phase-lock schlieren system. The characteristic of the transient flow field is studied. The experiment shows that a series of high-speed blast waves spreads outward after discharge. These blast waves, attenuated to the local sound speed, form a wavefront, which continues to influence the flow field. Due to the interaction between each blast wave and the squeeze from previous blast waves, the subsequent blast waves' impact range is limited and form “jet-like” phenomenon. A little later, there comes a high-speed jet to continuous influence the flow field.