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

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KUBEČKA Martin ŠNÍRER Miroslav OBRUSNÍK Adam KUDRLE Vít BONAVENTURA Zdeněk

Rok publikování 2020
Druh Článek v odborném periodiku
Časopis / Zdroj Plasma Sources Science and Technology
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://doi.org/10.1088/1361-6595/ab9b19
Doi http://dx.doi.org/10.1088/1361-6595/ab9b19
Klíčová slova numerical simulation; microwave plasma; flow instability; plasma jet
Popis 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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