INFLUENCE OF A LOCAL TEMPERATURE CHANGE OF A METAL MELT ON ITS ELECTROVORTEX MOTION IN A BOUNDED VOLUME

The infl uence of a local change in the temperature of a metal melt in a bounded volume of a dc arc furnace with a bottom electrode on the structure of its convective and electrovortex fl ows has been modeled numerically with account taken of the crystallization of the metal. The motion of the metal melt was described by magnetic-hydrodynamics equations for a nonisothermal liquid. The strategy of solution of the indicated problem within the framework of standard packages of applied programs has been developed. It has been shown that the local temperature change of the metal melt changes substantially the structure of its convective and electrovortex fl ows in the immediate vicinity of a point of the furnace with a lower-than-average temperature and exerts a minor infl uence on the vortex motion of the melt as a whole throughout the furnace′s volume.
   
Author:  O. V. Kazak
Keywords:  numerical modeling, vortex and convective fl ows, metal melt, Lorentz force, dc arc furnace
Page:  743