A numerical model for vibro-acoustic problems with sheared mean flows

Gabard, G., Treyssède, F. and BenTahar, M. (2004) A numerical model for vibro-acoustic problems with sheared mean flows. Journal of Sound and Vibration, 272, 991-1011. (doi:10.1016/j.jsv.2003.03.007).

Record type: Article

Abstract

A model based on Galbrun's equation is proposed to address the problem of vibro-acoustic interactions in sheared flows. The use of a displacement-pressure mixed formulation of Galbrun's equation greatly simplifies the coupling condition formulations and avoids the problem of non-zero frequency spurious modes encountered with displacement-based acoustic formulations. This model is applied to duct acoustics. Comparisons with analytical models demonstrate the accuracy of the method. The effects of mean flow shear on acoustic wave propagation in elastic ducts are then illustrated.

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Published date: 2004

Organisations: Acoustics Group

Identifiers

Local EPrints ID: 28449

URI: http://eprints.soton.ac.uk/id/eprint/28449

DOI: doi:10.1016/j.jsv.2003.03.007

ISSN: 0022-460X

PURE UUID: 6210fd08-de7a-4c88-9c65-05ab721c5481

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Date deposited: 02 May 2006

Last modified: 15 Mar 2024 07:25

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Contributors

Author: G. Gabard

Author: F. Treyssède

Author: M. BenTahar

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