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Hierarchical FIT/FE Discretization for Dielectric Subcell Interfaces

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4 Author(s)
De Gersem, H. ; Campus Kortrijk, Katholieke Univ. Leuven, Kortrijk ; Schuhmann, R. ; Feigh, S. ; Weiland, T.

The discretization of an electrostatic problem by the finite integration technique (FIT) is augmented with specialized finite-element shape functions for resolving dielectric interfaces that are not resolved by the Cartesian grid. The numerical validation shows that the achieved accuracy matches the one of a conformal discretization. The additional approximation space is implemented as a perturbation of the original Cartesian FIT formulation.

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Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 6 )