Title :
Transient eddy current formulation including moving conductors using the FI method
Author :
Clemens, M. ; Weiland, T. ; Wilke, M.
Author_Institution :
Darmstadt Univ. of Technol., Germany
fDate :
7/1/2000 12:00:00 AM
Abstract :
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
Keywords :
Maxwell equations; conductors (electric); eddy currents; electromagnetic fields; finite difference time-domain analysis; iterative methods; transients; FI method; Maxwell-grid-equations; Peclet numbers; finite integration; finite-difference-implicit-time-domain formulation; fixed-coordinate formulation; implicit time-stepping techiques; iterative methods; large algebraic systems; moving conductors; moving-coordinate scheme; slowly-varying electromagnetic fields; time domain formulations; transient eddy current formulation; unidirectional motion; Conducting materials; Conductors; Differential equations; Eddy currents; Finite difference methods; Integral equations; Magnetic materials; Maxwell equations; Sparse matrices; Vectors;
Journal_Title :
Magnetics, IEEE Transactions on
