Atmospheric pressure plasma of dielectric barrier discharges

Abstract

The dielectric barrier discharge (DBD) has a number of industrial applications and has been a subject of research for many years. Many studies have been carried out to understand the underlying DBD physics. Despite the fact that much progress has been made, some important issues are still far from being clear. In this work, we summarize the basics of DBD physics and introduce innovative concepts of discharge behavior that were discovered recently.

Diffuse Coplanar Surface Barrier Discharge in Artificial Air: Statistical Behaviour of Microdischarges

“…It implies that the reappearance of microdischarges at the close places within the single halfperiod of the discharge is suppressed by the developed space charge and surface charges which were stored on the dielectric barriers during previous microdischarge event [44]. During the next half-period of the discharge the same mechanism is on the other hand responsible for the local electric field enhancement at the position of some previous microdischarge [43].…”

“…The theory of the so-called 'memory effect' [42][43][44] of DBD says that the time and space appearance of microdischarges is influenced by the remnant electric charges and the excited species in the process gas and on the surface of dielectric barriers. It implies that the reappearance of microdischarges at the close places within the single halfperiod of the discharge is suppressed by the developed space charge and surface charges which were stored on the dielectric barriers during previous microdischarge event [44].…”

“…In the case of atmospheric pressure DBDs rather microsecond to millisecond timescales are expected [47,48]. Moreover, in the case Instead the remnant active species influence the places of microdischarge occurrence through the distortion of electric field (in case of charged species at the surfaces) and favoring electron production at the pathways of preceding microdischarges (active species in the volume) [42][43][44][45]49,50]. It should be noted also, that the exact processes of 'memory effect' in the case of DBD are not completely understood so far.…”

Investigation of the Plasma Processes for Food Treatment

“…The plasma may be driven by a flow of the feed gas or (less commonly) manipulated through the use of magnetic fields. This type of system has the advantage of placing the surface to be treated at a physically separate point of generation (Chirokov et al, 2005). The second category is known as direct treatment cold plasma systems.…”

2D Axisymmetric Coupled Computational Fluid Dynamics–Kinetics Modeling of a Nonthermal Arc Plasma Torch for Diesel Fuel Reforming

“…Benilov et al has developed a low current plasma discharge model in atmospheric pressure to study the non-equilibrium effects 18 . Most CFD models developed for plasma-assisted reforming processes were mainly dedicated to the flow inside the torch 19,20 . Chemical reactions were not taken into account.…”