Title :
Comparison of methods for modelling jumps in conductivity using magnetic vector potential based formulations
Author :
Leonard, P.J. ; Rodger, D.
Author_Institution :
Bath Univ., UK
fDate :
3/1/1997 12:00:00 AM
Abstract :
This paper compares finite element formulations for modelling eddy current problems with jumps in conductivity. We study schemes which represent the eddy current regions using nodal or edge based magnetic vector potentials. The use of an additional electric scalar potential, V, in the eddy current regions is discussed. The nodal A scheme is shown to produce misleading results at low frequencies whilst the AV and edge A schemes are acceptable
Keywords :
eddy currents; electric potential; electrical conductivity; finite element analysis; conductivity; eddy current problems; eddy current regions; edge based magnetic vector potentials; electric scalar potential; finite element formulations; low frequencies; magnetic vector potential; nodal based magnetic vector potentials; nondestructive testing; Biomedical equipment; Conductivity; Eddy currents; Electric potential; Finite element methods; Frequency; Magnetic fields; Medical services; Skin; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
