Numerical Simulation of Neutral Dynamics in Stationary Short - Gap Discharge in Air
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Abstract
The numerical simulation of the variation of the neutral molecule density induced by the strong correlation between the dynamics of the electron gas and that of the neutral gas is studied in a 2-D numerical modelisation. The energy injection is simulated by a mathematical function that represents the spatial dependence of the discharge density. The simulated discharge is a positive point to plane discharge in a gap = 6 mm, in air at atmospheric pressure (760 Torr), with cylindrical symmetry. The hydrodynamic set of equations, i.e. equations of transport for mass, momentum and energy, is solved by the flux corrected transport (F.C.T.) method, in employing the procedure of time splitting for the two space variables. The space and time distributions of the fundamental hydrodynamic quantities, density and temperature of the neutral gas are obtained.
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