Hydrodynamic aspects of electromagnetic vibrational treatment of molten metals under microgravity conditions

Some hydrodynamical effects arising in a process of high-frequency electro-magnetic treatment of molten metals has been carried out for the case when the field is generated by two-coil inductor and the melt has a spherical shape. The analysis was based on Maxwell and acoustic sets of equations. An axially symmetric field of the considered structure positions a melt in the inductor center. The distribution of the surface electromagnetic forces was derived in the framework of perfect conductivity melt model. The volume density of the forces acting on a melt in the ultrasonic field generated by electromagnetic forces has been calculated. The acoustic streaming arising in the case was qualitatively examined.