WIT Press


A Regular Boundary Integral Formulation For Acoustic Problems With Unique Solution For All Wave Numbers

Price

Free (open access)

Paper DOI

10.2495/BE990441

Volume

25

Pages

10

Published

1999

Size

809 kb

Author(s)

Shu-Wei Wu & Shu-Wen Wu

Abstract

A regular integral equation based on the direct boundary element method is developed to solve the exterior acoustic radiation and scattering prob- lems. By taking an imaginary source surface inside the radiating boundary and following the usual discretization and integration procedures employed in the boundary element method, both the singularities of the integrands and the nonuniqueness problems do not arise. In addition, multiple colloca- tion points with different outward normals can be placed at same position, thus the difficulty of slope discontinuity can be overcome. This p

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