Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2347354
