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Computational aero-acoustics for fan duct propagation and radiation. Current status and application to turbofan liner optimisation

Astley, Richard, Sugimoto, Rie and Mustafi, Prateek (2011) Computational aero-acoustics for fan duct propagation and radiation. Current status and application to turbofan liner optimisation Journal of Sound and Vibration, 330, pp. 3832-3845. (doi:10.1016/j.jsv.2011.03.022).

Record type: Article

Abstract

Novel techniques are presented to reduce noise from turbofan aircraft engines by optimising the acoustic treatment in engine ducts. The application of Computational Aero-Acoustics (CAA) to predict acoustic propagation and absorption in turbofan ducts is reviewed and a critical assessment of performance indicates that validated and accurate techniques are now available for realistic engine predictions. A procedure for integrating CAA methods with state of the art optimisation techniques is proposed in the remainder of the article. This is achieved by embedding advanced computational methods for noise prediction within automated and semi-automated optimisation schemes. Two different strategies are described and applied to realistic nacelle geometries and fan sources to demonstrate the feasibility of this approach for industry scale problems.

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More information

Published date: May 2011
Organisations: Fluid Dynamics & Acoustics Group

Identifiers

Local EPrints ID: 185379
URI: http://eprints.soton.ac.uk/id/eprint/185379
ISSN: 0022-460X
PURE UUID: 0540188c-af1d-4f0e-b350-d347148bb526

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Date deposited: 10 May 2011 10:13
Last modified: 18 Jul 2017 11:49

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