SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 7: Atmospheric Pressure Plasmas and their Applications III

P 7.4: Vortrag

Dienstag, 21. März 2023, 17:45–18:00, CHE/0089

Modeling and simulation of transport processes in capacitively coupled radio-frequency-driven micro atmospheric pressure plasma jets — •Lukas L. Vogelhuber, Katharina Nösges, Maximilian Klich, Thomas Mussenbrock, and Ralf Peter Brinkmann — Faculty of Electrical Engineering and Information Technology, Ruhr University Bochum, Bochum, Germany

Capacitively coupled radio-frequency-driven micro atmospheric pressure plasma jets (CCRF µAPPJ) are used in biomedical science and CO₂ conversion. Numerical methods offer a range of possibilities to investigate a µAPPJ’s gas and plasma dynamics. A hybrid simulation code is implemented to investigate a CCRF µAPPJ that handles electrons kinetically in a particle-in-cell/Monte Carlo collisions (PIC/MCC) scheme and ions and other heavy particles in a fluid mechanical manner. The simulation cycle of charged and neutral particles is separated, accounting for their different time scales and to spare computational resources. A one-dimensional continuity equation for the charged heavy particles is solved based on the drift-diffusion approximation. For neutral heavy particles, the gas flow is modeled by Hagen Poisseuille’s law, and a two-dimensional continuity equation is solved. The main goal of this work is implementing a scheme that can solve complex chemistry and gas transport and gives two-dimensional (2D) resolved data without evoking a full 2D-PIC scheme. With the exemplary chemistry of He/N₂ this work shows that the presented scheme is suitable for the communication between separate plasma and gas dynamics simulation that creates a multi-physics framework.