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P: Fachverband Plasmaphysik
P 10: Poster Session I
P 10.16: Poster
Dienstag, 1. April 2025, 16:15–18:15, ZHG Foyer 1. OG
Exploration of modern techniques for optimising plasma modelling procedures — Aleksandar P. Jovanović1, Marjan Stankov1, Robert Wagner1, Ihda Chaerony Siffa1, Aleksandar Trokicić2, Marko D. Petković2, and •Markus M. Becker1 — 1Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany — 2Faculty of Sciences and Mathematics, University of Niš, Niš, Serbia
Understanding the physical and chemical processes relevant to plasma generation is particularly important due to its broad technological potential. To gain a deeper understanding of these processes, numerical modelling is often applied. Plasma models often need to account for many particle species and reactions, leading to a large system of partial differential equations, which needs to be solved numerically. In addition, fine meshes are required to resolve the sheath regions, which further increases the number of degrees of freedom and prolongs calculation time. Therefore, a big challenge in plasma modelling is to find an efficient way to solve these equations. To tackle this challenge, modern techniques for simplification and optimisation of plasma modelling procedures are investigated and discussed. The studied approaches include automating geometry and refined mesh generation supported by image processing, a reinforcement learning-based time-stepping and the use of tailored preconditioners for iterative solvers. The results of applying these techniques to model a positive streamer in air and an RF discharge in argon at low pressure are presented and discussed.
Financially supported by the DAAD PPP – Projekt-ID 57703239.
Keywords: plasma modelling; fluid model; optimisation