Abstract
A free-burning, high-intensity argon arc at atmospheric pressure was modeled during the evaporation of copper vapor from the anode to study the impact of the vapor to the entire plasma region. A uniform and a Gaussian radial velocity distribution are adopted for the copper vapor at the anode boundary with a net mass flow rate known from the experiment. The effect of both velocity distributions on the temperature, mass flow, current flow, and Cu concentration was studied for the entire plasma region. The cathode region is not affected by the evaporated copper, and the Cu vapor concentration in the arc core is negligible.
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