Abstract
An iterative numerical procedure has been used to determine the equilibrium meniscus shape in a coreless induction melting furnace by coupling calculations of the meniscus shape with the electromagnetic field. The electromagnetic and force fields have been then calculated for the predicted equilibrium meniscus shape of the molten metal. The finite element method (OPERA-2d) has been used to model the axisymmetric electromagnetic field and the skin effect has been considered in all conductors. Satisfactory agreement has been obtained between the calculated and measured meniscus shapes. Calculations of the fields with different melt shapes and applied currents have shown that the present model can be used to design the electromagnetic and force fields which are required to produce the desired heating and stirring effects in coreless induction rumaces.
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