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Airfoil noise measurements at various angles of attack and low Reynolds number

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dc.contributor.authorArcondoulis, E.en
dc.contributor.authorDoolan, C.en
dc.contributor.authorZander, A.en
dc.contributor.conferenceAnnual Conference of the Australian Acoustical Society (2009 : Adelaide, South Australia)en
dc.date.issued2009en
dc.description.abstractAirfoils produce tonal noise when operated at low-to-moderate Reynolds number. It is particularly annoying to the human ear and is problematic for the design of fans, compressors, helicopter rotors and unmanned air vehicles. Despite recent advances in the understanding of this phenomenon, there are still many unresolved aspects regarding the aerodynamic source generation mechanism. In this paper, the trailing edge noise characteristics of a NACA0012 airfoil at low Reynolds numbers (50,000 to 150,000) are presented. Experimental measurements show that the noise consists of a multitude of tones centered about a broadband component. Such noise spectra are not observed at higher Reynolds numbers. The effect of angle of attack and Reynolds number will be discussed along with possible source generation mechanisms.en
dc.description.statementofresponsibilityElias Arcondoulis, Con Doolan and Anthony C. Zanderen
dc.description.urihttp://www.acoustics.asn.au/joomla/acoustics-2009.htmlen
dc.identifier.citationProceedings of Acoustics 2009 : Research to Consulting, the Annual Conference of the Australian Acoustical Society, held at The University of Adelaide 23-23 November 2009.en
dc.identifier.isbn9780975785577en
dc.identifier.orcidZander, A. [0000-0003-4099-8146]en
dc.identifier.urihttp://hdl.handle.net/2440/56886
dc.language.isoenen
dc.publisherAASen
dc.publisher.placeCDen
dc.titleAirfoil noise measurements at various angles of attack and low Reynolds numberen
dc.typeConference paperen
pubs.publication-statusPublisheden

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