Numerical Simulation of Fluid Flow during Strip Casting with Electromagnetic Braking in the Mold of Single-belt Caster

Abstract

For theoretically investigating the fluid flow under the influence of various direct-current(DC) magnetic fields in the mold of a single-belt horizontal continuous caster, a three-dimensional(3D) numerical model for describing electromagnetic-solidification phenomena based on finite volume method(FVM) is presented. The bidirectional interactions between transport process and DC magnetic fields are simplified as a unilateral one, and the fully coupled transport equations are numerically solved by indirect-coupling method. The DC magnetic fields with two configurations output by ANSYS as well as two assumed magnetic fields in literatures with different values are taken as external DC magnetic fields for EMBr; the influences of various magnetic fields on flow field are studied by numerical calculation. The results show that 0.2 T magnetic field with fictitious configurations can result in a reasonably flow, and a vertical-type DC magnetic field precedes the horizontal one. The optimal flow field could be achieved when a 0.4 T real DC magnetic field with different configurations applied, which is inferior to the fictitious DC magnetic field due to decay characteristic of a real magnetic field. The calculation model and the methods as well as all results provide the basis and reference for the improvement of the magnetic flow modifier and flow in mold in follow-up study.