Open rotor centrebody scattering
Open rotor centrebody scattering
This paper investigates the effect of acoustic scattering from the centrebody of an advanced open rotor engine. The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible effect on rotor-alone tones produced by a subsonic rotor, however, the scattering effect can be significant for rotor-alone tones produced by a supersonic rotor and certain rotor–rotor interaction tones. The paper concludes with an analysis which shows that the centrebody scattered field may be significantly reduced by applying an acoustic liner to the centrebody surface.
418-433
Kingan, M.J.
2d2daafa-d6d7-41aa-a9fc-2307259ac9f0
Sureshkumar, P.
af326a7e-0e96-40af-a22c-b802b950b49d
Kingan, M.J.
2d2daafa-d6d7-41aa-a9fc-2307259ac9f0
Sureshkumar, P.
af326a7e-0e96-40af-a22c-b802b950b49d
Kingan, M.J. and Sureshkumar, P.
(2013)
Open rotor centrebody scattering.
Journal of Sound and Vibration, 333 (2), .
(doi:10.1016/j.jsv.2013.08.010).
Abstract
This paper investigates the effect of acoustic scattering from the centrebody of an advanced open rotor engine. The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible effect on rotor-alone tones produced by a subsonic rotor, however, the scattering effect can be significant for rotor-alone tones produced by a supersonic rotor and certain rotor–rotor interaction tones. The paper concludes with an analysis which shows that the centrebody scattered field may be significantly reduced by applying an acoustic liner to the centrebody surface.
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e-pub ahead of print date: 17 October 2013
Organisations:
Acoustics Group
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Local EPrints ID: 359078
URI: http://eprints.soton.ac.uk/id/eprint/359078
ISSN: 0022-460X
PURE UUID: 701379a5-1cf3-4366-bea7-abe4777a17fe
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Date deposited: 22 Oct 2013 08:51
Last modified: 14 Mar 2024 15:16
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Author:
M.J. Kingan
Author:
P. Sureshkumar
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