Theoretical modeling of pulse discharge cycle in dielectric barrier discharge plasma actuator

Abstract

Simple models based on two-dimensional simulations are proposed to estimate intervals of periodically observed current pulses with a positivegoing voltage in a dielectric barrier discharge plasma actuator. There are two distinct peaks in one streamer discharge; one is related to the formation of an ion cloud and the other is related to a filamentary discharge that is identified as a streamer. Simulation results show that the intervals of the current pulses depend on the slope of the applied voltage. For the ion-cloud formation phase, we model the time evolution of electron number density at the exposed electrode with ionization frequency. For the ion-cloud expansion phase, a positive ion cylinder model is proposed to estimate the electric field generated by surface charge on the dielectric. These models well reproduce the discharge intervals obtained in the numerical simulations.

Successively accelerated ionic wind with integrated dielectric-barrier-discharge plasma actuator for low-voltage operation

“…A detailed description of the simulation method can be found in the Methods section. The model employed in this study agreed well with previous experimental and numerical studies 23,27–29 and can reproduce the dielectric surface charge behavior 25 . We conducted a numerical simulation for the nine-electrode case.…”

A fast solver of plasma fluid model in dielectric-barrier-discharge simulation

“…In the positive-going phase, the current pulses are smaller than that of the highfrequency case because the corona discharge occurs throughout this phase and does not transit to the streamer discharge due to the low voltage-slope [38]. In this case, the interval of the current pulses increases with increasing the voltage slope and is longer than the period of the applied voltage [42]. The similar results in the low-frequency case were obtained in previous numerical studies [34,38,46].…”

“…As an initial condition, electrons and positive ions are distributed uniformly with a density of 10 9 m −3 [18]. The Neumann boundary condition is adopted for charged particles density and electric potential at the boundaries of the simulation domain [42]:…”

Effects of Electrode Structure and Electron Energy on Abatement of NO in Dielectric Barrier Discharge Reactor

“…Numerical simulation, an effective tool in developing the NTP theories and determining the operating parameters, has been developed in recent years [43,44]. Numerical study of the DBD operation is conventionally focused on plasma modeling approaches, namely, fluid and kinetic plasma description.…”