SMuK 2023 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 9: Atmospheric Pressure Plasmas and their Applications III
P 9.1: Hauptvortrag
Mittwoch, 22. März 2023, 11:00–11:30, CHE/0089
Modelling and analysis of single-filament dielectric barrier discharges at atmospheric pressure — •Markus M. Becker1, Ronny Brandenburg1, Tomáš Hoder2, Hans Höft1, Aleksandar P. Jovanović1, and Detlef Loffhagen1 — 1Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany — 2Masaryk University, Brno, Czech Republic
This contribution gives an overview of research results of the last 10 years on the modelling of single-filament dielectric barrier discharges (DBDs). Two discharge configurations are used to highlight the possibilities and limitations of spatially one- (1D) and two-dimensional (2D) time-dependent fluid models. First, it is shown for a one-sided, sine-driven DBD in argon that 1D models are generally suitable to describe the discharge characteristics in periodic operation. Second, 1D models are found to be suitable for systematic determination of the influence of preionisation on repetitively pulsed, two-sided DBDs in nitrogen-oxygen gas mixtures up to time scales of milliseconds. However, 1D models lack the ability to correctly describe the appearance of striations (in argon) and the streamer breakdown phase (∼ 1 ns). For this purpose, 2D models are applied, which show a very good agreement with measurement results. Since processes on longer time scales (µs to ms) can only be investigated in 2D with extreme computational effort, a smart combination of 1D and 2D models is most promising for a profound understanding of filamentary DBDs.
This work was partly funded by the DFG—projects 407462159 and 408777255, and Czech Science Foundation project 21-16391S.