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dc.contributor.authorAyton, Lorna
dc.contributor.authorParuchuri, C
dc.date.accessioned2018-09-05T09:39:49Z
dc.date.available2018-09-05T09:39:49Z
dc.date.issued2018-06-25
dc.identifier.isbn9781624105609
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/279100
dc.description.abstractThis paper presents an analytic solution for the sound generated by an unsteady gust interacting with a semi-infinite flat plate with a piecewise linear periodic leading edge. The Wiener-Hopf method is used in conjunction with a non-orthogonal coordinate transformation and separation of variables to allow analytical progress. A fully analytic solution is obtained in terms of a modal expansion for the far-field noise which is obtained by summing only a finite number of cuton modes, allowing very quick evaluation. The analytic solution is compared to experimental results for five test case leading-edge geometries. Good agreement is seen indicating the analytic model is capturing the key features of the interaction such as the destructive interference from the tip and root. In four of the five test cases the serrated edges show large reductions of noise compared to the straight edge at mid and high frequencies, however the square wave geometry is seen to be ineffective at noise reduction for high frequencies.
dc.publisherAmerican Institute of Aeronautics and Astronautics
dc.titleAnalytic solutions for reduced leading-edge noise aerofoils
dc.typeConference Object
prism.publicationDate2018
prism.publicationName2018 AIAA/CEAS Aeroacoustics Conference
dc.identifier.doi10.17863/CAM.26480
dcterms.dateAccepted2018-05-16
rioxxterms.versionofrecord10.2514/6.2018-3284
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-01-01
dc.contributor.orcidAyton, Lorna [0000-0001-6280-9460]
rioxxterms.typeConference Paper/Proceeding/Abstract
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P015980/1)
cam.issuedOnline2018-06-24
pubs.conference-name2018 AIAA/CEAS Aeroacoustics Conference


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