A review of CAA for fan duct propagation and radiation, with application to liner optimisation

Autor:	Rie Sugimoto, Matthew Kewin, I.M. Achunche, Prateek Mustafi, R.J. Astley, E.P. Deane
Rok vydání:	2010
Předmět:	Computational Aero-acoustics Engineering Aircraft noise Sound transmission class Nacelle business.industry Acoustics General Medicine Acoustic liners Radiation Turbofan Acoustic propagation Optimisation Duct (flow) Computational aeroacoustics Noise reduction business Engineering(all) Turbofan ducts
Zdroj:	Procedia Engineering. 6:143-152
ISSN:	1877-7058
DOI:	10.1016/j.proeng.2010.09.016
Popis:	This article reviews the application of Computational Aero-Acoustics (CAA) to the prediction of acoustic propagation in turbofan ducts. The challenge of resolving the radiated sound field for realistic nacelle geometries is discussed and evidence is presented to indicate that current CAA is able to represent the effect of in-duct liners on far-field measured rig and engine data. Two approaches are presented for incorporating CAA predictions within liner optimisation schemes for a turbofan intake.
Databáze:	OpenAIRE
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