Efficient Modeling of Thin Wires in a Lossy Medium by Finite Elements Applied to Grounding Systems

A procedure is proposed to accurately model thin wires in lossy media by finite element analysis. It is based on the determination of a suitable element width in the vicinity of the wire, which strongly depends on the wire radius to yield accurate results. The approach is well adapted to the analysi...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2011-05, Vol.47 (5), p.966-969
Main Authors: Silva, Viviane Cristine, Martinho, Lucas Blattner, Cardoso, José Roberto, Filho, Mário Leite Pereira, Verardi, Sérgio Luis Lopes
Format: Article
Language:English
Subjects:
Conductivity
Cross-disciplinary physics: materials science
rheology
Electric potential
Exact sciences and technology
Finite element methods
Finite-element methods (FEMs)
Grounding
grounding electrodes
Magnetism
Materials science
Other topics in materials science
Physics
Resistance
thin wires
Time domain analysis
Wires
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Summary:A procedure is proposed to accurately model thin wires in lossy media by finite element analysis. It is based on the determination of a suitable element width in the vicinity of the wire, which strongly depends on the wire radius to yield accurate results. The approach is well adapted to the analysis of grounding systems. The numerical results of the application of finite element analysis with the suitably chosen element width are compared with both analytical results and those computed by a commercial package for the analysis of grounding systems, showing very good agreement.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2010.2074188