An efficient reformulation of a multiscale method for the eddy current problem
ISSN: 0332-1649
Article publication date: 4 September 2017
Abstract
Purpose
This paper aims to improve the efficiency of a numerical method to treat the eddy current problem on a laminated material, where using a mesh that resolves each individual laminate would be too computationally expensive.
Design/methodology/approach
The domain is modeled using a coarse mesh that treats the laminated material as a bulk with averaged properties. The fine-structured behavior is recovered by introducing micro-shape functions in the ansatz space. One such method is analyzed to find further model restrictions.
Findings
By using a special reformulation, it is possible to eliminate the additional degrees of freedom introduced by the multiscale ansatz at the cost of an additional modeling error that decreases with the laminate thickness.
Originality/value
The paper gives a computationally more efficient approximate variant to a known multiscale method.
Keywords
Acknowledgements
This work was supported by the Austrian Science Fund (FWF) under Project P 27028-N15.
Citation
Schöbinger, M., Hollaus, K. and Schöberl, J. (2017), "An efficient reformulation of a multiscale method for the eddy current problem", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 36 No. 5, pp. 1421-1429. https://doi.org/10.1108/COMPEL-02-2017-0091
Publisher
:Emerald Publishing Limited
Copyright © 2017, Emerald Publishing Limited