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Airfoil-Turbulence Interaction Noise Source Identification and Reduction by Leading-Edge Serrations

Conference Paper (2019)
Author(s)

G. Bampanis (École Centrale de Lyon)

M. Roger (École Centrale de Lyon)

D. Ragni (TU Delft - Wind Energy)

F. Avallone (TU Delft - Wind Energy)

C. Teruna (TU Delft - Wind Energy)

Research Group
Wind Energy
Copyright
© 2019 G. Bampanis, M. Roger, D. Ragni, F. Avallone, C. Teruna
DOI related publication
https://doi.org/10.2514/6.2019-2741
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 G. Bampanis, M. Roger, D. Ragni, F. Avallone, C. Teruna
Research Group
Wind Energy
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en
ISBN (electronic)
978-1-62410-588-3
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

The present work is aimed at assessing leading-edge serrations as an airfoil turbulenceimpingement noise (TIN) reduction mean. It relies on extended anechoic wind-tunnel testing including far-field measurements over an observation sphere to infer the three-dimensional features of TIN, and on microphone-array measurements to extract leading-edge noise in frequency. In particular this allows measuring unambiguously reductions of up to 15 dB achieved by serrations on flat plates. A preliminary study of the three-dimensional flow field around the leading edge using time-resolved tomographic particle image velocimetry (PIV) is detailed.

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