A high-order wideband direct solver for electromagnetic scattering from bodies of revolution

Charles L. Epstein, Leslie Greengard, Michael O'Neil

Research output: Contribution to journalArticlepeer-review

Abstract

The generalized Debye source representation of time-harmonic electromagnetic fields yields well-conditioned second-kind integral equations for a variety of boundary value problems, including the problems of scattering from perfect electric conductors and dielectric bodies. Furthermore, these representations, and resulting integral equations, are fully stable in the static limit as ω→0 in multiply connected geometries. In this paper, we present the first high-order accurate solver based on this representation for bodies of revolution. The resulting solver uses a Nyström discretization of a one-dimensional generating curve and high-order integral equation methods for applying and inverting surface differentials. The accuracy and speed of the solvers are demonstrated in several numerical examples.

Original languageEnglish (US)
Pages (from-to)205-229
Number of pages25
JournalJournal of Computational Physics
Volume387
DOIs
StatePublished - Jun 15 2019

Keywords

  • Body of revolution
  • Generalized Debye sources
  • Maxwell's equations
  • Penetrable media
  • Perfect electric conductor
  • Second-kind integral equations

ASJC Scopus subject areas

  • Numerical Analysis
  • Modeling and Simulation
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Computer Science Applications
  • Computational Mathematics
  • Applied Mathematics

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