MATHEMATICAL-MODELING OF A FREE-BURNING ARC IN THE PRESENCE OF METAL VAPOR

The transfer of energy between the plasma and the iron anode and the e vaporation of metal were taken into account in modeling a short free-b urning arc in argon at atmospheric pressure. The presence of metal vap or in the plasma modifies the electrical conductivity and the radiated power and leads to arc cooling in the anode region. In return, the ar c cooling modifies the rate of vaporization of the anode and thus the calculated concentration of iron vapor in the arc.