Simulations of direct-current air glow discharge at pressures ∼1 Torr: Discharge model validation

作者: Shankar Mahadevan , Laxminarayan L. Raja

DOI: 10.1063/1.3374711

关键词: Electron temperatureElectric currentGlow dischargeDirect currentAtomic physicsChemistryPlasmaTorrPlasma actuatorIonGeneral Physics and Astronomy

摘要: Computational simulations of air glow discharge phenomena in the pressure range typical plasma actuator applications for high speed flow control are presented. The model is based on a self-consistent, multispecies, and multitemperature continuum description plasma. A reduced suitable multidimensional with 11 species 21 gas phase chemical reactions validated against experimental results literature. predicts experimentally observed mode operation, current-voltage characteristics discharge, spatial profiles electron temperature positive ion number densities. For pressures order 1 Torr, O2+ N2+ dominant concentration O− negative comparable to concentration. two-dimensional structure predicted by found be agreement qualitative observations from experiments.

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