A Boundary Element Method for Propagation Over Absorbing Boundaries

Abstract

Two-dimensional sound propagation over an arbitrarily shaped barrier situated on a locally reacting infinite plane in a homogeneous medium is treated using the boundary element method (BEM). The boundary integral equation (BIE) is formulated in terms of a half-space Green's function which is constructed to satisfy the impedance boundary condition on the ground plane. The integral in the resulting Green's function is transformed, using the steepest descent method, to a suitable form for effective numerical evaluation even for a relatively small distance between the image source and the receiving point. Comparison of the BEM results with an available analytic solution and experimental results by Kearns and by Habault shows good agreement to the sound field using the BEM. © 1994 Academic Press. All rights reserved.

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0022-460X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1994 Elsevier, All rights reserved.

Publication Date

01 Jan 1994

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