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dc.contributor.authorBENNETT, GARETHen
dc.date.accessioned2010-09-13T11:20:44Z
dc.date.available2010-09-13T11:20:44Z
dc.date.created7-9 Juneen
dc.date.issued2010en
dc.date.submitted2010en
dc.identifier.citationGareth J. Bennett, Ian Davis, Ulf Tapken, John Mahon, Nonlinear Frequency Scattering of Broadband Noise in Turbomachinery (AIAA 2010-3805), 16th AIAA/CEAS Aeroacoustics Conference, Stockholm, Sweden, 7-9 June, 2010en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/40646
dc.descriptionPUBLISHEDen
dc.descriptionStockholm, Swedenen
dc.description.abstractCoherence based source analysis techniques can be used to identify the contribution of broadband noise sources in the exhaust of a gas turbine and hence enable the design of noise reduction devices. However, when the broadband noise source propagates in a non-linear fashion the identified contribution using ordinary coherence methods will be inaccurate. In this paper, an analysis technique to enable the contribution of linear and non-linear mechanisms to the propagated sound to be identified is reported. An bench-test experimental rig to study the propagation of noise through a rotor/stator set-up using a vane-axial fan mounted in a duct so that non-linear interactions between a sound source and the fan could be investigated is described. The technique which is used to identify non-linear noise contributions generated by the interaction of the rotor and propagated narrowband noise is reported and validated using this rig. The techniques are subsequently applied to data generated from within an FP7 Collaborative European Aeroacoustics Project: TEENI. The analysis techniques enabled non-linear interactions to be identified and linear and non-linear contributions to be determined.en
dc.description.sponsorshipThis work was partly supported by the Seventh Framework Programme TEENI project which is funded under EU Commission grant agreement 212367en
dc.language.isoenen
dc.rightsYen
dc.subjectAeroacousticen
dc.subjectNonlinearen
dc.subjectturbomachineryen
dc.subjectnoise source identificationen
dc.subjectfrequency scatteringen
dc.subjectAerospace engineeringen
dc.titleNonlinear Frequency Scattering of Broadband Noise in Turbomachinery (AIAA 2010-3805)en
dc.title.alternative16th AIAA/CEAS Aeroacoustics Conferenceen
dc.typeConference Paperen
dc.contributor.sponsorEuropean Commissionen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/bennettgen
dc.identifier.rssinternalid66788en
dc.relation.ecprojectidinfo:eu-repo/grantAgreement/EC/FP7/212367
dc.rights.ecaccessrightsOpenAccess
dc.contributor.sponsorGrantNumber212367en
dc.identifier.rssurihttp://arc.aiaa.org/doi/abs/10.2514/6.2010-3805en


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