Abstract
The flux concentration effect is applied to a levitation-melting system to improve its melting quantity. This high-frequency induction system consists of a cylindrical conductor with one slit (concentrator) and an exciting coil. A high magnetic field can be generated in the concentrator using high-frequency induction. In this paper, the shape of the concentrator is optimized to obtain a maximum levitation force by using an approximate-axisymmetric boundary element analysis. In the optimized concentrator, we can obtain about four times the levitation force as can be obtained without the concentrator. As a result, the melting quantity in this system with the optimized concentrator is doubled in comparison with the initial model.
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