Numerical Analysis of an Inductive Furnace Using the Finite Element Method in Comsol

The classical design of induction furnaces is based on analytical relationships that result from solving the differential equations and the partial derivative equations that model the thermal and electrical processes that occur during the melting of the batch material. Due to the general nature of the analytical solutions, relations and correction coefficients obtained from experimental studies and from the designers' practical knowledge bases are often adopted. For this reason, several numerical methods have been developed, including the finite element method, which manages to eliminate some shortcomings of the analytical methods. The implementation of the finite element method was achieved by developing laborious programs produced by specialized companies, including the Comsol Multiphysics program. Heat Transfer in Solids - Electromagnetic Heating-Induction Heating is the module used by Comsol Multiphysics software to achieve an induction heating problem. After running the problem the results will be displayed in the Results menu, where they can be extracted and subjected to analysis.