Title :
Representation of a Straight Thin Wire in a Lossy Medium and an Oblique Thin Wire in Air for FDTD Simulations
Author :
Asada, Takashi ; Baba, Yoshihiro ; Nagaoka, Naoto ; Ametani, Akihiro
Author_Institution :
Dept. of Electr. Eng., Doshisha Univ., Kyoto, Japan
Abstract :
An improved representation of a straight thin wire for a 3-D finite-difference time-domain simulation has been applied to the transient analysis of a straight thin wire in a lossy medium, and its validity has been shown. In this representation, a straight wire having a specified radius is simulated by a straight wire having the equivalent radius 0.199Δs, where Δs is the lateral side length of cubic cells employed, embedded in an artificial parallelepiped medium having modified conductivity (only if it is in a lossy medium), modified relative permittivity, and modified relative permeability. Also, the equivalent radius of a staircase-approximated oblique wire in air has been evaluated, and its thin-wire representation has been discussed.
Keywords :
finite difference time-domain analysis; transient analysis; wires (electric); FDTD; oblique thin wire; relative permeability; relative permittivity; staircase-approximated oblique wire; straight thin wire; transient analysis; Conductors; Finite difference methods; Impedance; Surges; Time-domain analysis; Transient analysis; Wires; Equivalent radius; finite-difference time-domain method; thin wire; transient;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.2015.2424976
