Abstract
A transient three-dimensional (3D) model has been developed to investigate the impact of the solidified slag on the heat transfer and magnetohydrodynamic (MHD) flow during the electroslag remelting process. The solution of the mass, momentum, and energy conservation equations are simultaneously implemented by the finite volume method with full coupling of the Joule heating and Lorentz force through solving the Maxwell’s equations. The solidification is modeled by an enthalpy-based technique. A reasonable agreement is obtained between the experiment and simulation. The results definitely highlight that the solidified slag skin does not behave as a perfect electrical insulator during the process. The electrical insulation hypothesis of the solidified slag makes a significant influence on physical fields which must be used with extreme care.
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