Modeling Of The Function Of Distribution In An Electric Discharge Wire-Cylinder

The transfer of energy of the particles charged towards the neutral particles, plays a role determining in the evolution of the discharge. The discharge is made up of a succession of individual discharges, and under a strong potential, some one of these discharges develop completely giving rise to an arc. From the thermodynamic point of view, for neutral gas, this corresponds to a transfer of energy which makes increase the temperature of gas and thus causes a movement of convection [l]. In this work, we simulate the thermal print of the neutrals induced by an electric discharge of type crowns of distance interelectrode equal to 2.5 cm, the tension is of 15 kV and the current equal to 0.4 mA. The profile of the discharge is simulated by a mathematical function representing a distribution in cos3() according to the radial direction and in sin() along the axis of the discharge. The evolution of the neutrals is analyzed using the transport equations of the density, of the momentum and of the energy and the solution of these equations is ensured by the finite element method. Simulation is made in a space with two dimensions with a symmetry of revolution around the axis of the discharge. The results obtained show that for the transfer transfer function in cos3(), are in concord with the experimental results obtained by. Lemerini et al.[2].