Mathematical modeling of melt rotation during pulsed heating of a metal target

On the experimental stand Beam of Electrons for materials Test Applications (BETA) created in the INP SB RAS, the results of heating the tungsten plate by the action of a high-speed electron beam on it were obtained. We consider an extended dynamic model of current distribution when the surface of a tungsten sample is heated by an electronic beam pulse. The temperature in the sample, calculated from the two-phase Stefan problem, is needed to solve the electrodynamic equations. A special case of axial symmetry without taking into account electrical driving forces is considered. The current is considered as a possible source of rotation of the substance, which is observed in the experiment. The aim of the study is to simulate the erosion of the sample surface as a result of evaporation and penetration of heat flux into the material.