Time dependent 2-dimensional model of an alternating current arc

Abstract

Two computed models of an ac arc are considered in the paper. The burning of the arc in air is simulated between two electrodes, one of which is blown with gas. The simulation is performed using COMSOL Multiphysics software product. An incompressible flow is considered with default settings, when the density is constant and temperature-independent and the density is temperature-dependent. An analysis of the distribution of velocities, temperature on the axis, and the voltage drop across the arc is made.