The electromagnetic forces in an induction furnace deform the free surface of a molten aluminum bath into a dome shape. The deformation may also be affected by the oxide skin present at the free surface. A structured light technique was used to measure the free surface deformation and its variations in a laboratory scale induction furnace, as a function of operating parameters - current intensity and liquid metal filling inside the crucible. A numerical model capable of taking into account the strong electromagnetic -hydrodynamics coupling was developed to simulate the electromagnetic stirring phenomena. The Volume Of Fluid (VOF) method was applied to model the free surface deformation. A comparison of the measured and the calculated dome shapes is presented.
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