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A finite element, wave envelope formulation for acoustical radiation in moving flows

A finite element, wave envelope formulation for acoustical radiation in moving flows
A finite element, wave envelope formulation for acoustical radiation in moving flows
An axisymmetric finite element model is presented for the prediction of radiation patterns generated by stationary acoustical sources in moving flows. The acoustical field is represented in an outer region by wave envelope elements which incorporate some features of ray acoustical behaviour. These are compatibly matched to a conventional finite element mesh in a region close to the generating mechanism. Results are presented for problems involving vibrating cylinders and spheres in subsonic mean flows. Good agreement is established between computed and exact solutions.

0022-460X
471-485
Astley, R.J.
cb7fed9f-a96a-4b58-8939-6db1010f9893
Astley, R.J.
cb7fed9f-a96a-4b58-8939-6db1010f9893

Astley, R.J. (1985) A finite element, wave envelope formulation for acoustical radiation in moving flows. Journal of Sound and Vibration, 103 (4), 471-485. (doi:10.1016/S0022-460X(85)80016-X).

Record type: Article

Abstract

An axisymmetric finite element model is presented for the prediction of radiation patterns generated by stationary acoustical sources in moving flows. The acoustical field is represented in an outer region by wave envelope elements which incorporate some features of ray acoustical behaviour. These are compatibly matched to a conventional finite element mesh in a region close to the generating mechanism. Results are presented for problems involving vibrating cylinders and spheres in subsonic mean flows. Good agreement is established between computed and exact solutions.

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Published date: 22 December 1985

Identifiers

Local EPrints ID: 166495
URI: http://eprints.soton.ac.uk/id/eprint/166495
DOI: doi:10.1016/S0022-460X(85)80016-X
ISSN: 0022-460X
PURE UUID: 132cd8f5-6774-45c1-a4d1-da0297c76672

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Date deposited: 29 Oct 2010 08:09
Last modified: 14 Mar 2024 02:13

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Author: R.J. Astley

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