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, 3832-3845. (doi:10.1016/j.jsv.2011.03.022).

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Description/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.

Item Type: Article
ISSNs: 0022-460X (print)
1095-8568 (electronic)
Subjects: Q Science > QC Physics
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Fluid Dynamics and Acoustics
ePrint ID: 185379
Date Deposited: 10 May 2011 10:13
Last Modified: 27 Mar 2014 19:40
URI: http://eprints.soton.ac.uk/id/eprint/185379

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