Effects of External Currents and Soil Heterogeneities on an Approximate Boundary Condition for the 3-D Finite Element Analysis of Subsurface Conductive Coupling Problems

Author

Blattner Martinho, Lucas ; Silva, Viviane Cristine

Author_Institution

Lab. de Eletromagnetismo Aplicado, Escola Politec. da Univ. de Sao Paulo, Sao Paulo, Brazil

Volume

51

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

1

Lastpage

4

Abstract

An approximate boundary condition was proposed for the 3-D finite element analysis of subsurface conductive couplings. This approach is now tested to show that it may be applied with advantages in problems characterized by the injection of currents in soil regions left outside the computational domain. The effects of soil heterogeneities on the numerical scheme are also investigated.

Keywords

earthing; finite element analysis; 3D finite element analysis; approximate boundary condition; computational domain; current injection; external current effect; numerical scheme; soil heterogeneities; soil regions; subsurface conductive couplings; Conductivity; Couplings; Electric potential; Finite element analysis; Grounding; Power transmission lines; Soil; Electromagnetic coupling; finite-element methods (FEMs); grounding; pipelines; transmission lines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2347354

Filename

7093420