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Electromagnetic scattering calculations using a finite—element solver for the Maxwell equations

  • C. Richard DeVore
  • Rainald Löhner
  • John Ambrosiano
Session II: Mesh Management and Visualization
Part of the Lecture Notes in Physics book series (LNP, volume 395)

Abstract

We describe a pair of finite-element codes which use unstructured meshes to solve the time-dependent Maxwell equations, with particular emphasis on their application to electromagnetic scattering problems. A two-step, flux-corrected transport scheme is used to effect the time integration, while the spatial structure of the field is determined by a Galerkin procedure. The basis functions are piecewise-linear on three-noded triangles in two dimensions and four-noded tetrahedra in three. For the periodic scattering problems with which we are presently concerned, adaptive remeshing is a convenient and powerful method for improving the quality of the solutions. Results for the analytically tractable case of scattering by a perfectly conducting circular cylinder are used to illustrate the performance of the codes.

Keywords

Transverse Electric Scattered Field Fourier Amplitude Electromagnetic Scattering Acoustic Scattering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • C. Richard DeVore
    • 1
  • Rainald Löhner
    • 2
  • John Ambrosiano
    • 3
  1. 1.Laboratory for Computational Physics and Fluid DynamicsNaval Research LaboratoryWashingtonUSA
  2. 2.CMEE, SEASThe George Washington UniversityWashington
  3. 3.Lawrence Livermore National LaboratoryLivermoreUSA

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