Study of atmospheric pressure discharges with a novel hybrid code

Denis Eremin, Torben Hemke, Ralf Peter Brinkmann, Thomas Mussenbrock

65th An­nual Ga­se­ous Elec­tro­nics Con­fe­rence (GEC), Aus­tin (Texas), USA, 22-26 Oc­to­ber


Abstract

Numerical simulations bear special signi?cance in helping to understand the phenomena taking place in the atmospheric discharges as the diagnostic capabilities are severely limited there due to small sizes of such discharges. In this work we study atmospheric pressure discharges with a fully self-consistent hybrid code, where the kinetically treated electron component is calculated on GPU using the PIC/MCC approach and ions are treated under the ?uid approximation on CPU. The resulting code is fast, because the computationally intensive kinetic algorithm is parallelized on GPU, ?exible, because it is straightforward to include complex chemistry processes for the ion component in the ?uid model, and allows to capture all the essential physics due to quite general assumptions underlying the model. A comparison with fully ?uid simulations is made. We demonstrate with our code that the kinetic description of electrons is important even for the atmospheric pressure discharges.

Tags: APPJ, atmospheric pressure, hybrid coe, RF discharges