Abstract A new model and a numerical method are developed to solve the electromagnetic force field produced by the rotating magnetic field in electromagnetic stirring of processing. The model equations are transformed using the characteristics of rotating magnetic field, and the boundary renewal method is applied to boundary conditions. Using the present model, the electromagnetic force fields in different size billets considering the effect of iron core are computed. The three – dimensional distribution of electromagnetic forces are obtained in detail under the condition of variable parameters. The numerical results agree well with the experimental measurement.
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