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Updated: Jul 16, 2026
06:36
Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet
Published on: November 2, 2020
Modeling of atmospheric-pressure plasma columns sustained by surface waves
Y Kabouzi1, D B Graves, E Castaños-Martínez
1Department of Chemical Engineering, University of California, Berkeley, California 94720, USA. yassine.kabouzi@umontreal.ca
Summary
This study presents a 2D fluid-plasma model for atmospheric pressure argon discharges, incorporating gas flow effects. The model accurately predicts plasma column structure and electromagnetic fields, improving upon previous approximations.
Area of Science:
- Plasma Physics
- Fluid Dynamics
- Electromagnetics
Background:
- High-pressure discharges exhibit contraction phenomena.
- Previous models often assumed local axial uniformity, leading to discrepancies.
- Understanding surface-wave propagation at atmospheric pressure is crucial.
Purpose of the Study:
- To develop a self-consistent 2D fluid-plasma model for argon discharges.
- To investigate the influence of gas flow on plasma parameters.
- To accurately simulate surface-wave propagation at atmospheric pressure.
Main Methods:
- Coupling a 2D fluid-plasma model with Maxwell's equations.
- Solving self-consistent mass, momentum, and energy balance for neutral particles (gas flow).
- Including argon molecular ion kinetics for charged-particle balance.
Main Results:
- The model captures the full axial and radial plasma structure and electromagnetic fields.
- Accounting for gas flow resolves discrepancies seen with the local axial uniformity approximation.
- Gas temperature is identified as a critical parameter influencing plasma column structure.
Conclusions:
- The 2D fluid-plasma model provides accurate predictions for atmospheric pressure surface-wave discharges.
- The local axial uniformity approximation is of limited validity at atmospheric pressure.
- Gas flow and temperature are essential factors in modeling these discharges.
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