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

Volume

57

Issue

5

fYear

2015

Firstpage

1164

Lastpage

1167

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;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2015.2424976

Filename

7128408