A Finite Volume Scheme for Modeling Arc Discharges in Low Voltage Circuit Breaking Devices

In this document, a coupled system of codes will be presented that have the goal to simulate the transient arc movement in low voltage circuit breaker devices. A numerical method built on the basis of the finite volume scheme is described, that addresses convergence problems at the current-dependent potential jump at the interface between the arc and the electrodes. It is shown how different simulations can propagate, depending on the initial temperature profile that models individual ignition methods. Experimental and simulated data will be compared on simplified geometries, i.e. a geometry with straight runners, and a second geometry with one runner bent, exhibiting good qualitative agreement.