Characteristics of sharp discharge of three-electrode plasma synthetic jet

In order to calculate the resistance of arc discharge exactly and enhance the energy utilization of plasma synthetic jet actuator(PSJA), we experimentally investigated the sharp discharge of three-electrode. The values of arc resistance and trend of discharging efficiency, arc resistance, and discharge pattern were obtained by changing parameters such as the electrode gap, air pressure, resistor and voltage. Results show that, at the atmospheric pressure, with the increase of initial discharge voltage, the discharge efficiency and arc resistance decrease gradually. At the atmospheric pressure, the arc resistance keeps unchanged regardless of capacitance for the same capacitor energy(≥250 mJ). At high air-pressure (>50 kPa), the arc resistance and discharge efficiency become bigger with the increase of capacitance. When the air pressure becomes lower, the initial discharge voltage becomes bigger, or the distance of electrodes becomes smaller, and the arc resistance and discharging efficiency will be bigger.