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Role of Soft-Iron Impellers on the Mode Selection in the von Kármán–Sodium Dynamo Experiment
A crucial point for the understanding of the von Kármán-sodium (VKS) dynamo experiment is the influence of soft-iron impellers. We present numerical simulations of a VKS-like dynamo with a localized permeability distribution that resembles the shape of the flow driving impellers. It is shown that the presence of soft-iron material …