FI2TD schemes for magnetic field simulations: new formulations and algorithmic improvements

M. Clemens and T. Weiland
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M. Clemens: Technische Universität Darmstadt, Department of Electrical Engineering and Information Technology, Computational Electromagnetics Laboratory (TEMF)
T. Weiland: Technische Universität Darmstadt, Department of Electrical Engineering and Information Technology, Computational Electromagnetics Laboratory (TEMF)

A chapter in Numerical Mathematics and Advanced Applications, 2003, pp 255-264 from Springer

Abstract: Summary Finite Integration Implicit Time Domain (FI2TD) methods are designed for the calculation of transient magnetic fields and are based on the Finite Integration Technique. To improve the geometric modeling capabilities of these methods while maintaining computationally efficient structured orthogonal grids, the Conformal Finite Integration Technique was introduced. A magnetic field formulation based on a reduced magnetic vector potential formulation also allows an improved geometrical modeling of excitation coils while at the same time reducing the computational work for FI2TD simulation s at typically low accuracy requirements. A new generalized linearization formulation is presented for the simulation of nonlinear ferromagnetic material behavior, which includes the standard linearization schemes as special cases and enables us to derive hybrid nonlinear iteration schemes.

Keywords: Finite Difference Time Domain; Orthogonal Grid; Eddy Current Test; Generalize Linearization Method; Local Grid Refinement (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-88-470-2089-4_23

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DOI: 10.1007/978-88-470-2089-4_23

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