Charge Conservation Methods for the Thin-Wire Model

The Holland-Simpson thin-wire model is a versatile technique to manage wires in the finite-difference time domain method. Parasitic solutions may pollute results computed with oblique thin wires in the FDTD grid, and a condition in which the current-density assignment does not generate artificial ch...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 71; no. 10; p. 1
Main Authors Qiao, Hailiang, Xie, Haiyan, Cheng, Guoxin, Zhang, Maoyu, Chen, Jiannan
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
charge conservation
Computational modeling
Current density
Electric fields
Finite difference methods
Finite difference time domain method
Finite-difference time domain (FDTD)
Mathematical models
thin wire
time domain
Time-domain analysis
Wire
Wires
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Summary:The Holland-Simpson thin-wire model is a versatile technique to manage wires in the finite-difference time domain method. Parasitic solutions may pollute results computed with oblique thin wires in the FDTD grid, and a condition in which the current-density assignment does not generate artificial charges in the grid has been derived by Bérenger. In this study, we present several new current density assignments of the thin-wire model. The new implementations are based on the charge conservation method in particle-in-cell simulations. Furthermore, numerical experiments demonstrate the accuracy.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2023.3296855