Closed-form evaluation of potential integrals in the Boundary Element Method

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A method is presented for the closed-form evaluation of the singular and near-singular integrals arising in the Boundary Element Method solution of the Helmholtz equation. An error analysis is presented for the numerical evaluation of such integrals on a plane element, and used to develop a criterion for the selection of quadrature rules. The analytical approach is based on an optimized expansion of the Green's function for the problem, selected to limit the error to some required tolerance. Results are presented showing accuracy to tolerances comparable to machine precision.

Original languageEnglish
Article number1950014
JournalJournal of Theoretical and Computational Acoustics
Issue number2
Early online date3 Mar 2020
Publication statusPublished - 30 Jun 2020

Bibliographical note

Publisher Copyright:
© 2019 Institute for Theoretical and Computational Acoustics, Inc.


  • Boundary element method
  • Helmholtz equation
  • layer potentials
  • numerical integration
  • scattering

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Computer Science Applications
  • Applied Mathematics


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