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Edge element computations of eddy currents in laminated materials

We studied different types of edge elements in three-dimensional computations of power dissipation in laminated conductors. The standard, lowest order (mixed first and zeroth order) basis on tetrahedral grids produces inaccurate results and grossly overestimates the losses. However, on hexahedral gr...

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Published in:	IEEE transactions on magnetics 2003-05, Vol.39 (3), p.1758-1765
Main Authors:	Yueqiang Liu, Bondeson, A., Bergstrom, R., Larson, M.G., Samuelsson, K.
Format:	Article
Language:	English
Subjects:	Alignment Anisotropic magnetoresistance Applied classical electromagnetism Bonding Computation Conducting materials Conductors Degrees of freedom Dissipation Eddy currents Electric potential Electromagnetism electron and ion optics Exact sciences and technology Fundamental areas of phenomenology (including applications) Lamination Magnetic anisotropy Magnetism Magnetostatics magnetic shielding, magnetic induction, boundary-value problems Mathematical analysis Mathematics Perpendicular magnetic anisotropy Physics Power dissipation
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container_title	IEEE transactions on magnetics
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creator	Yueqiang Liu Bondeson, A. Bergstrom, R. Larson, M.G. Samuelsson, K.
description	We studied different types of edge elements in three-dimensional computations of power dissipation in laminated conductors. The standard, lowest order (mixed first and zeroth order) basis on tetrahedral grids produces inaccurate results and grossly overestimates the losses. However, on hexahedral grids, aligned with the laminations, the standard edge elements give much more accurate results. If the grid cannot be aligned with the laminations, the dissipation can still be accurately computed with the lowest order hexahedral elements by using midpoint integration. Tetrahedral grids give accurate results if the complete first order basis is included, but this doubles the number of degrees of freedom.
doi_str_mv	10.1109/TMAG.2003.809843
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subjects	Alignment Anisotropic magnetoresistance Applied classical electromagnetism Bonding Computation Conducting materials Conductors Degrees of freedom Dissipation Eddy currents Electric potential Electromagnetism electron and ion optics Exact sciences and technology Fundamental areas of phenomenology (including applications) Lamination Magnetic anisotropy Magnetism Magnetostatics magnetic shielding, magnetic induction, boundary-value problems Mathematical analysis Mathematics Perpendicular magnetic anisotropy Physics Power dissipation
title	Edge element computations of eddy currents in laminated materials
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