Elimination of internal resonance problem associated with acoustic scattering by three-dimensional rigid body

Chandrasekhar, B and Rao, Sadasiva M (2004) Elimination of internal resonance problem associated with acoustic scattering by three-dimensional rigid body. In: The Journal of the Acoustical Society of America, 115 (6). pp. 2731-2737.

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Abstract

In this work, a simple and stable numerical method is presented, utilizing the method of moments (MoM), to eliminate the internal resonance problem associated with acoustic scattering by three-dimensional rigid body subjected to a plane wave incidence. The numerical method is based on the potential theory and combines the single layer formulation (SLF) and the double layer formulation (DLF). The scattering body is approximated by planar triangular patches. For the MoM solution of SLF and DLF, the basis functions have been defined with respect to the edges to approximate the unknown source distribution. These basis functions along with an efficient testing procedure generate accurate results at all frequencies, including the characteristic frequencies. Finally, the new 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.
Keywords:	Boundary integral methods;Fluid-filled cylinders;Radiation problems;Arbitrary shape;Multiple bodies;Element methods;Moments
Department/Centre:	Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Date Deposited:	18 Dec 2008 12:27
Last Modified:	19 Sep 2010 04:54
URI:	http://eprints.iisc.ac.in/id/eprint/16897

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