Coupled 3D Numerical Model of Droplet Evolution Behaviors during the Magnetically Controlled Electroslag Remelting Process

摘要

A transient three-dimensional coupled numerical model has been established to clarify the influence of the external transverse static magnetic field (TSMF) on droplet evolution behaviors during the electroslag remelting (ESR) process with an alternating current (50?Hz). The development of the electromagnetic field code and the calculation procedure showed that the periodic inverse Lorentz force (50?Hz) could be fully coupled with the volume of fluid model in each iteration when an external TSMF of 0.05?T is superimposed. The droplet evolution behaviors with and without the external TSMF were demonstrated and analyzed. The numerical results showed that the huge periodic inverse Lorentz force could smash the droplet neck into numerous smaller droplets during the ESR process with the external TSMF; simultaneously, the interfacial area and falling time could be increased, indicating that the purification efficiency could be expected to improve.