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Prediction of acoustic radiation from axisymmetric surfaces with arbitrary boundary conditions using the boundary element method on a distributed computing system

Prediction of acoustic radiation from axisymmetric surfaces with arbitrary boundary conditions using the boundary element method on a distributed computing system
Prediction of acoustic radiation from axisymmetric surfaces with arbitrary boundary conditions using the boundary element method on a distributed computing system
This paper presents a computational technique using the boundary element method for prediction of
radiated acoustic waves from axisymmetric surfaces with nonaxisymmetric boundary conditions.
The aim is to predict the far-field behavior of underwater acoustic transducers based on their
measured behavior in the near-field. The technique is valid for all wavenumbers and uses a volume
integral method to calculate the singular integrals required by the boundary element formulation.
The technique has been implemented on a distributed computing system to take advantage of its
parallel nature, which has led to significant reductions in the time required to generate results.
Measurement data generated by a pair of free-flooding underwater acoustic transducers
encapsulated in a polyurethane polymer have been used to validate the technique against
experiment. The dimensions of the outer surface of the transducers including the polymer coating
were an outer diameter of 98 mm with an 18 mm wall thickness and a length of 92 mm. The
transducers were mounted coaxially, giving an overall length of 185 mm. The cylinders had
resonance frequencies at 13.9 and 27.5 kHz, and the data were gathered at these frequencies.
acoustic transducers, acoustoelectric transducers, boundary-elements methods, parallel processing, physics computing, polymers, underwater sound
0001-4966
1374-1383
Wright, Louise
016463c3-d661-4e7f-9b95-f82770503424
Robinson, Stephen P.
ff096bc4-4e1f-44ec-ae1d-d671208d1ae7
Humphrey, Victor F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Wright, Louise
016463c3-d661-4e7f-9b95-f82770503424
Robinson, Stephen P.
ff096bc4-4e1f-44ec-ae1d-d671208d1ae7
Humphrey, Victor F.
23c9bd0c-7870-428f-b0dd-5ff158d22590

Wright, Louise, Robinson, Stephen P. and Humphrey, Victor F. (2009) Prediction of acoustic radiation from axisymmetric surfaces with arbitrary boundary conditions using the boundary element method on a distributed computing system. Journal of the Acoustical Society of America, 125 (3), 1374-1383. (doi:10.1121/1.3056467).

Record type: Article

Abstract

This paper presents a computational technique using the boundary element method for prediction of
radiated acoustic waves from axisymmetric surfaces with nonaxisymmetric boundary conditions.
The aim is to predict the far-field behavior of underwater acoustic transducers based on their
measured behavior in the near-field. The technique is valid for all wavenumbers and uses a volume
integral method to calculate the singular integrals required by the boundary element formulation.
The technique has been implemented on a distributed computing system to take advantage of its
parallel nature, which has led to significant reductions in the time required to generate results.
Measurement data generated by a pair of free-flooding underwater acoustic transducers
encapsulated in a polyurethane polymer have been used to validate the technique against
experiment. The dimensions of the outer surface of the transducers including the polymer coating
were an outer diameter of 98 mm with an 18 mm wall thickness and a length of 92 mm. The
transducers were mounted coaxially, giving an overall length of 185 mm. The cylinders had
resonance frequencies at 13.9 and 27.5 kHz, and the data were gathered at these frequencies.

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More information

Published date: March 2009
Keywords: acoustic transducers, acoustoelectric transducers, boundary-elements methods, parallel processing, physics computing, polymers, underwater sound

Identifiers

Local EPrints ID: 145551
URI: http://eprints.soton.ac.uk/id/eprint/145551
ISSN: 0001-4966
PURE UUID: fa719711-9eba-4f32-9126-66c483c609a4
ORCID for Victor F. Humphrey: ORCID iD orcid.org/0000-0002-3580-5373

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Date deposited: 19 Apr 2010 10:39
Last modified: 14 Mar 2024 02:48

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Contributors

Author: Louise Wright
Author: Stephen P. Robinson

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