Abstract
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 language | English |
|---|---|
| Article number | 1950014 |
| Journal | Journal of Theoretical and Computational Acoustics |
| Volume | 28 |
| Issue number | 2 |
| Early online date | 3 Mar 2020 |
| DOIs | |
| Publication status | Published - 30 Jun 2020 |
Bibliographical note
Publisher Copyright:© 2019 Institute for Theoretical and Computational Acoustics, Inc.
Keywords
- Boundary element method
- Helmholtz equation
- layer potentials
- numerical integration
- scattering
ASJC Scopus subject areas
- Acoustics and Ultrasonics
- Computer Science Applications
- Applied Mathematics