Title :
Axisymmetric electromagnetic fields coupled to lossy media
Author :
Lee, Min Eig ; Ida, Nathan
Author_Institution :
UCI Corp., Kent, OH, USA
fDate :
3/1/1990 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
