Journal title
The Journal of the Acoustical Society of America
DOI
10.1121/1.4906265
Issue
2
Volume
137
Last updated
2024-03-05T21:06:26.633+00:00
Page
633-639
Abstract
This paper concerns the frequency domain problem of diffraction of a plane wave incident on an infinite right-angled wedge on which impedance (absorbing) boundary conditions are imposed. It is demonstrated that the exact Sommerfeld-Malyuzhinets contour integral solution for the diffracted field can be transformed to a line integral over a physical variable along the diffracting edge. This integral can be interpreted as a superposition of secondary point sources (with directivity) positioned along the edge, in the spirit of the edge source formulations for rigid (sound-hard) wedges derived by Svensson et al. [Acta Acust. Acust. 95, 568-572 (2009)]. However, when surface waves are present the physical interpretation of the edge source integral must be altered: it no longer represents solely the diffracted field, but rather it includes surface wave contributions.
Symplectic ID
508137
Submitted to ORA
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Publication type
Journal Article
Publication date
Feb 2015