Axisymmetric electromagnetic fields coupled to lossy media

Author

Lee, Min Eig ; Ida, Nathan

Author_Institution

UCI Corp., Kent, OH, USA

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

575

Lastpage

578

Abstract

A solution for transient axisymmetric electromagnetic fields coupled to lossy media is presented. The resulting model is an interface problem in which the continuation of electric and magnetic fields are the interface conditions. A potential function is defined to model the problem in the time domain. Appropriate boundary conditions are imposed on the artificial boundary to absorb the outgoing field. Finite-difference techniques are used to match the potential function explicitly in time. Numerical methods are validated with analytic solutions and then applied to solve more complicated interface problems. As an example, the field distribution excited by an insulated small loop between two finite cylinders of lossy material is calculated and presented

Keywords

difference equations; eddy currents; electromagnetic field theory; time-domain analysis; coupled to lossy media; field distribution; finite difference analysis; insulated small loop; interface problem; mirror image method; potential function; time domain modelling; transient axisymmetric electromagnetic fields; two finite cylinders; Boundary conditions; Dielectric losses; Electromagnetic coupling; Electromagnetic fields; Electromagnetic transients; Finite difference methods; Magnetic analysis; Magnetic fields; Maxwell equations; Time domain analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106382

Filename

106382