Title :
Influence of surface charges in the finite volume modeling of conductive regions for 3-D eddy-current computation
Author_Institution :
Dipt. di Sistemi Elettrici ed Automazione, Univ. di Pisa, Italy
fDate :
5/1/2003 12:00:00 AM
Abstract :
The finite volume discretization of massive conductors for the calculation of eddy-current distribution causes fictitious surface charges at the boundary between adjacent volume elements having different current values. In this paper, the effects of these surface charges on the numerical solution of three-dimensional eddy-current problems are evidenced. Furthermore, comparing solutions of eddy-current problems in the presence and absence of surface charges, an empirical criterion is derived for the mesh refinements of the current inside massive volumes.
Keywords :
conductors (electric); current distribution; eddy currents; electric charge; finite volume methods; 3D eddy-current computation; 3D eddy-current problems; adjacent volume elements; conductive regions; eddy-current distribution; fictitious surface charges; finite volume discretization; finite volume methods; finite volume modeling; massive conductors; mesh refinements; numerical solution; three-dimensional eddy-current problems; Computational modeling; Conductors; Current density; Distributed computing; Eddy currents; Equations; Finite volume methods; Geometry; Helium; Numerical models;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.810374
