Transient eddy current formulation including moving conductors using the FI method

Recently introduced time domain formulations based on the Finite Integration Method (FI) allow one to calculate slowly-varying electromagnetic fields with various implicit time-stepping techiques. In this paper such a Finite-Difference-Implicit-Time-Domain (FDiTD) formulation is extended to consider unidirectional motion of conductors within the computational domain. A moving-coordinate scheme suited for high Peclet numbers and a fixed-coordinate formulation are presented on the basis of the Maxwell-Grid-Equations. The resulting large algebraic systems of equations are solved by iterative methods for each time step. Numerical results of both methods are compared to results of a test problem configuration.

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