A hybrid method for terminating the finite‐element mesh (electrostatic case)

Tanmoy Roy, Tapan K. Sarkar, Antonije R. Djordjevic, Magdalena Salazar‐Palma

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


The finite‐element or finite‐difference techniques are well known for the solution of Maxwell's equation in differential form. But terminating the mesh accurately at a finite distance from the body in the case of an open problem is a major challenge. Though there have been several techniques presented [1, 2], this new approach allows for the terminating surface to encapsulate the body very tightly. In this proposed method, the finite‐element technique is used for open‐region problems, whereas an integral equation solution approach using the Green's function is applied to enforce the radiation condition. At each iteration cycle, field sources within the domain are evaluated and their potential at the terminating surface is calculated. The proposed method leads to increased computational efficiency of the finite‐element method. It can be generalized for the case of inhomogeneous and nonlinear media, for static and dynamic fields. Typical numerical results are presented for the solution of the Laplace equation to illustrate the accuracy of the technique. © 1995 John Wiley & Sons. Inc.

Original languageEnglish (US)
Pages (from-to)282-287
Number of pages6
JournalMicrowave and Optical Technology Letters
Issue number6
StatePublished - Apr 20 1995


  • Finite‐element method
  • electromagnetics
  • mesh generation
  • numerical methods

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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