Publication details

Computational study of plasma-induced flow instabilities in power modulated atmospheric-pressure microwave plasma jet

Authors

KUBEČKA Martin ŠNÍRER Miroslav OBRUSNÍK Adam KUDRLE Vít BONAVENTURA Zdeněk

Year of publication 2020
Type Article in Periodical
Magazine / Source Plasma Sources Science and Technology
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.1088/1361-6595/ab9b19
Doi http://dx.doi.org/10.1088/1361-6595/ab9b19
Keywords numerical simulation; microwave plasma; flow instability; plasma jet
Description This work presents a combined experimental and simulation-based investigation of gas flow perturbations caused by atmospheric-pressure microwave plasma jet with modulated power. These plasma-induced flow instabilities are observed experimentally by schlieren imaging and the mechanism of their formation is explained using a numerical model. The model offers a time-resolved self-consistent solution of plasma dynamics, gas flow, and heat transfer equations. The simulation results are in good agreement with the experimental observations and we conclude that the key mechanism behind the flow perturbations is rapid gas heating at the end of the discharge tube.
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