Accurate computation of 'ripple solutions' on moving finite element meshes

The 'ripple field', i.e. the variation of the magnetic field for different positions of a moving part of an electric machine, can be computed accurately using the 'sliding surface mesh model. The spurious ripple solution for this model is by a factor of O(h/sup 1/2 /) lower than for the models involving mesh distortion (h is the mesh size). Theoretical error analysis and numerical results are presented.<
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