Numerical study of low pressure air plasma in an actuated channel

A model for air plasma discharge based on drift-diffusion with local mean energy approximation is described. The model consists of 7 species and 18 reactions. The code is benchmarked with experimental and numerical results for low pressure glow discharge in a cylindrical tube. The code is used to si...

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Bibliographic Details
Published in:Journal of applied physics 2015-12, Vol.118 (23)
Main Authors: Houba, Tomas, Roy, Subrata
Format: Article
Language:English
Subjects:
Actuators
Air plasma
Applied physics
Computer simulation
Electric wire
Glow discharges
Low pressure
Mathematical models
Neutral gases
Ohmic dissipation
Plasma jets
Resistance heating
Wire
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Summary:A model for air plasma discharge based on drift-diffusion with local mean energy approximation is described. The model consists of 7 species and 18 reactions. The code is benchmarked with experimental and numerical results for low pressure glow discharge in a cylindrical tube. The code is used to simulate the discharge produced by a wire placed in a rectangular channel with grounded electrodes at the top and bottom walls. The discharge is concentrated near the wire. The actuator acts on the neutral gas through a body force and Joule heating. Around 80%–90% of the electrical power is converted to Joule heating of the neutral gas and the wall. The actuator produces a body force on the order of 0.1 mN/m. The effectiveness of the actuator increases from 100 to 300 V, and plateaus from 300 to 600 V. The results of the study suggest a further exploration of the channel concept.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4938023