Numerical Simulation of Electromagnetic Stirrer Modernized by Using a Magnetodielectric Composite

Abstract

This paper presents the results of a study of the possibility of using a cermet composite based on Fe-Al2O3, as magnetodielectric inserts to increase the working gap between the inductor and the melt in the bottom electromagnetic stirrer with a rotating magnetic field. A three-dimensional model of a modernized laboratory facility for composite with a mass fraction of iron of 70% was studied. The model used previously measured electrical, thermal and magnetic physical parameters of composites. Numerical modeling of the problems of heat distribution in the modernized lining and the coupled electromagnetic-hydrodynamic-thermal problem of the temperature distribution in stirring molten metal was carried. A comparison of the results obtained for the standard and modernized stirrers has shown that the use of inserts is permissible in a limited range of values of the working gap.