Resonance Properties of a Low-Pressure Dielectric Barrier Discharge

The electrical characteristics of a dielectric barrier discharge (DBD) symmetrical actuator at low pressures gave been investigated. A power source–actuator–DBD system has been analyzed. The plot of the feed voltage frequency at which a voltage resonance is observed at the outer electrodes of an actuator with a given configuration against air pressure has been constructed. The DBD density, as well as the capacitance and Q factor of the system, as a function of pressure in a pressure chamber, has been determined. It has been found that, as the pressure drops, the fraction of the DBD energy spent on generating a synthetic jet grows.