Abstract
A 2 dimensional model has been developed to predict the free surface shape of liquid metal in an electromagnetic field, in which the field calculations have been coupled with the free surface shape change and the dynamic effect of the liquid metal flow. This has allowed the interactive phenomena in a coreless induction furnace to be simulated comprehensively and resulted in satisfactory agreement between the predicted and the measured meniscus shapes. Studies of the recirculating flow in molten aluminium have shown interactions of the meniscus shape with the flow field and therefore demonstrated the importanceof having detailed knowledge of the free surface shape in the electromagnetic processing of materials. In addition, the influence of the electrical conductivity and the skin effect in the induction coil on the electromagnetic confinement and the melt flow have been analysed.
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