Numerical Examinations of the Stability of FDTD Subgridding Schemes

Abstract

The stability of two-dimensional Finite-Difference Time-Domain subgridding schemes was numerically examined. Both the same-time-step and the multiple-time-step schemes were considered. Results show that the multiple-time-step subgridding scheme is late-time unstable due to larger-than-unity eigenvalues. As to the same-time-step subgridding schemes, stability is related to the treatment of comer regions.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2007
Accession Number
ADP023511

Entities

People

  • Shumin Wang

Organizations

  • National Institutes of Health

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Amplification
  • Boundaries
  • Cell Size
  • Differential Equations
  • Digital Signal Processing
  • Eigenvalues
  • Electric Fields
  • Electromagnetic Scattering
  • Equations
  • Finite Difference Time Domain
  • Instability
  • Integral Equations
  • Magnetic Fields
  • Partial Differential Equations
  • Signal Processing
  • Time Domain
  • Two Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)