Three-dimensional eddy current analysis of induction melting in cold crucibles

In order to reduce computer resources for the analysis of eddy current distribution of cold crucible models, the authors employed a current sheet approximation for eddy current distribution because penetration depth of the eddy current is relatively small in comparison with the dimension of the conducting bodies. The eddy current distributions approximated by current sheets are solved for by an integro-differential method using an electric vector potential. Furthermore, magnetic flux density, power loss, Lorentz force and lifting force of the molten metals are obtained from the solved eddy current distribution.