Numerical Modelling of Nitrogen Thermal Effects Produced by the Negative DC Corona Discharge

摘要

In this work,we simulate numerically the thermal effects in nitrogen at atmosphericpressure caused by a negative corona DC discharge of low current.A mathematical function thatsimulates the injection of the thermal transfer in gas is proposed.The simulated discharge is ofa negative point to plane mass type,with an interelectrode distance of 12 mm and a symmetryabout the axis of discharge.The spatial and temporal evolution of neutrals is analyzed based uponthe equations of continuity,momentum and energy in a cylindrical geometry.For the geometry ofthe system,the FCT (flux corrected transport) procedure was adopted.