A multigrid (MG) algorithm for the calculation of transient 3D eddy currents is presented. The finite element method with edge elements is used for the discretization of the problems. For the MG smoother, a multiplicative Schwarz algorithm and a special Gauss‐Seidel iteration are compared for different formulations of the eddy‐current problem. It appears that, using the right combination of smoother and eddy‐current formulation, the computation times can be substantially reduced.
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Weiß et al. (2003) studied this question.
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