Finite-difference computation of transient electromagnetic waves for cylindrical geometries in complex media

Fernando L. Teixeira, Weng Cho Chew

Research output: Contribution to journalArticle

Abstract

We present two novel, fully three-dimensional (3-D) finite-difference time-domain (FDTD) schemes in cylindrical coordinates for transient simulation of electromagnetic wave propagation in complex (inhomogeneous, dispersive, and conductive) and unbounded media. The proposed FDTD schemes incorporate an extension of the perfectly matched layer (PML) absorbing boundary condition (ABC) to three-dimensional (3-D) cylindrical coordinates. Dispersion on the media is modeled by using the piecewise-linear recursive convolution (PLRC) algorithm, accounting for multiterm Lorentz and/or Debye models. Split-field and unsplit (anisotropic medium) formulations of the cylindrical PML-PLRC-FDTD schemes are implemented and compared in the time domain. The comparison includes the late-time stability properties of the update schemes. Numerical simulations of subsurface electromagnetic problems are included. Because the proposed schemes retain the nearest-neighbor property of the ordinary FDTD, they are well suited for implementation on massively parallel computers.

Original languageEnglish (US)
Pages (from-to)1530-1543
Number of pages14
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume38
Issue number4 I
DOIs
StatePublished - Jul 1 2000

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Earth and Planetary Sciences(all)

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