Jetting axial flow induced by nanosecond repetitively pulsed discharges in quiescent ambient air

Abstract

This study investigates the phenomenon of jetting axial flow induced by nanosecond repetitively pulsed discharges(NRPD) in quiescent ambient air in a pin-to-pin electrode configuration. Axial stratification of discharge parameters(electron number density, temperature, specific energy, etc) influences the hydrodynamic effects leading to directed gas flow from the cathode towards the anode. The experimental results presented in this paper were obtained using schlieren imaging, optical emission spectroscopy(OES), and electrical measurements of the deposited energy. A jetting axial flow was induced for all considered gap distances(0.5-5 mm) and pulse repetition frequencies of