Title :
Current flow in long conductors with a step conductivity change
Author :
Namjoshi, K.V. ; Lavers, J.D. ; Biringer, P.P.
Author_Institution :
Dept. of Electr. Comput. Eng., Toronto Univ., Ont., Canada
fDate :
7/1/1998 12:00:00 AM
Abstract :
In this paper we analyze current flow in a long conductor which contains a step change in the conductivity. The cross section of the conductor is circular. An analytical method is used. The field variables are expressed in terms of Bessel and exponential functions. Expressions are derived for the current density and the incremental resistance introduced by the discontinuity. Numerical results are presented to show the dependence of the incremental resistance on the conductivity change. Qualitative expressions are provided for the incremental resistance
Keywords :
Bessel functions; current density; eddy currents; Bessel functions; analytical method; circular cross section; current density; current flow; exponential functions; incremental resistance; long conductors; step conductivity change; Conductivity; Conductors; Current density; Eddy currents; Electrodes; Equations; Furnaces; Magnetic analysis; Temperature; Toroidal magnetic fields;
Journal_Title :
Magnetics, IEEE Transactions on
