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Acoustic scattering from rigid bodies of arbitrary shape—Double layer formulation

Chandrasekhar, B and Rao, Sadasiva M (2004) Acoustic scattering from rigid bodies of arbitrary shape—Double layer formulation. In: The Journal of the Acoustical Society of America, 115 (5). pp. 1926-1933.

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In this work, a numerical method is presented, based on the well-known method of moments(MoM), to calculate the acoustic fields scattered by a three-dimensional, arbitrarily shaped, acoustically rigid body subjected to a plane wave incidence. The mathematical formulation is based on the potential theory and, in this work, the numerical method is applicable to the so-called double layer formulation (DLF). The scattering body is approximated by planar triangular patches. For the MoM solution using triangular patch modeling, edge-based basis functions are utilized to approximate the source distribution efficiently. These basis functions along with an appropriate testing procedure generates a simple numerical algorithm that is versatile enough to be applicable to closed, as well as open bodies. Finally, the present solution method is validated with several representative examples.

Item Type: Journal Article
Publication: The Journal of the Acoustical Society of America
Publisher: Acoustical Society of America
Additional Information: Copyright of this article belongs to Acoustical Society of America.
Department/Centre: Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Date Deposited: 16 Mar 2007
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ac.in/id/eprint/9876

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