eddy currents; field distorsion; finite element methods; perturbation methods
Abstract :
[en] A method for solving eddy current problems in two separate steps is developed for global-local analyses with h-conform finite element formulations. An unperturbed problem is first solved in a global mesh excluding additional conductive regions. Its solution gives the sources for a sequence of other problems, perturbed by adding conductive regions. Each problem only requires a new adapted mesh of a local region. The way the local problems and their sources are defined leads to a significant speedup of parameterized analyses, e.g., in optimization and sensitivity analyses.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Dular, Patrick ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
V Sabariego, Ruth ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Language :
English
Title :
A perturbation method for computing field distortions due to conductive regions with h-conform magnetodynamic finite element formulations
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Bibliography
Z. Badics et al., "An effective 3-D finite element scheme for computing electromagnetic field distorsions due to defects in eddy-current nondestructive evaluation," IEEE Trans. Magn., vol. 33, no. 2, pp. 1012-1020, Mar. 1997.
R. V. Sabariego and P. Dular, "A perturbation technique for the finite element modelling of nondestructive eddy current testing," in Proc. Int. Symp. Electromagn. Fields Mech., Electr. Electron. Eng. (ISEF), Sep. 15-17, 2005, CD-ROM, paper CE-2.5.
P. Dular and P. Kuo-Peng, "Dual finite element formulations for the three-dimensional modeling of both inductive and capacitive effects in massive inductors," IEEE Trans. Magn., vol. 42, no. 4, pp. 743-746, Apr. 2006.
P. Dular, P. Kuo-Peng, C. Geuzaine, N. Sadowski, and J. P. A. Bastos, "Dual magnetodynamic formulations and their source fields associated with massive and stranded inductors," IEEE Trans. Magn., vol. 36, no. 4. pp. 3078-3081, Jul. 2000.
C. Geuzaine, B. Meys, F. Henrotte, P. Dular, and W. Legros, "A Galerkin projection method for mixed finite elements," IEEE Trans. Magn., vol. 35, no. 3, pp. 1438-1441, May 1999.
J. F. Imhoff, G. Meunier, X. Brunotte, and J. C. Sabonnadière, "An original solution for unbounded electromagnetic 2D and 3D problems throughout the finite element method," IEEE Trans. Magn., vol. 26, no. 5. pp. 1629-1631, 1990.
F. Henrotte, B. Meys, H. Hedia, P. Dular, and W. Legros, "Finite element modelling with transformation techniques," IEEE Trans. Magn., vol. 35, no. 3, pp. 1434-1437, May 1999.
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