The discharge characteristics of the gas-liquid phase gliding arc discharge

driven by repetitive pulse power supply

were analyzed in order to spread its industrial applications. By experimental research

the voltage and current waveforms and the discharge images were recorded. The average discharge powers

typical emission spectra and electron excitation temperatures of gliding arc discharges were also compared under different gas volume flowrates. It is found that the average discharge power is significantly affected by gas volume flowrate under pure gas or gas-liquid phase conditions

and it reaches the maximum value when the gas volume flowrate is 14 L/min. Both of the relative intensity of OH radical and the electron excitation temperature of the gliding arc discharge decrease with the increasing gas volume flowrate

while the high energy electron density is significantly enhanced as the gas volume flowrate rises. The function of water vapor reduces the average discharging power and electron excitation temperature

but increases the intensity of the OH radical in the discharge area. Analysis shows that the OH radical intensity and electron energy are higher in the researched gliding arc discharge

and it can be widely used for the industrial waste gas treatment.