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dc.contributor.authorBennett, Garethen
dc.date.accessioned2010-01-21T16:02:29Z
dc.date.available2010-01-21T16:02:29Z
dc.date.created11-13 May 2009en
dc.date.issued2009en
dc.date.submitted2009en
dc.identifier.citationGareth J. Bennett, Ciar?n O'Reilly, Ulf Tapken, John Fitzpatrick, Noise Source Location in Turbomachinery Using Coherence Based Modal Decomposition (AIAA 2009-3367), 15th AIAA /CEAS Aeroacoustics Conference, Miami, Florida, 11-13 May 2009, 2009en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/36149
dc.descriptionPUBLISHEDen
dc.descriptionMiami, Floridaen
dc.description.abstractCoherence based source analysis techniques can be used to identify the contribution of turbomachinery core noise sources to pressure measurements in the far-field. The usual approach is to locate a measurement sensor within the engine and to calculate the ordinary coherence function between this and the far-field pressure measurement. If the internal measurement is close to a dominant noise source, the technique will identify this sources? contribution to the overall far-field energy. Modal decomposition is an advanced technique which can provide detailed information as to the modal content of sound propagating in ducts. When applied to aero-engines, the technique can be used as a diagnostic to determine which of the many rotor-stator stages contribute most to the overall radiated sound power. The method developed in this paper discusses how the two techniques can be combined to locate the plane at which a mode is generated within an aeroengine. A proof of concept of the technique is successfully demonstrated with the use of simulated data.en
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.rightsYen
dc.subjectMechanical & Manufacturing Engineering
dc.titleNoise Source Location in Turbomachinery Using Coherence Based Modal Decomposition (AIAA 2009-3367)en
dc.title.alternative15th AIAA /CEAS Aeroacoustics Conferenceen
dc.typeConference Paperen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/bennettgen
dc.identifier.rssinternalid57324en
dc.identifier.doihttp://arc.aiaa.org/doi/abs/10.2514/6.2009-3367en
dc.subject.TCDThemeSmart & Sustainable Planeten
dc.identifier.rssurihttp://arc.aiaa.org/doi/abs/10.2514/6.2009-3367en
dc.identifier.orcid_id0000-0002-1621-7533en


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