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

Conference paper (2019)

Authors

G. Bampanis École Centrale de Lyon
M. Roger École Centrale de Lyon
D. Ragni Wind Energy - Aerospace Engineering
F. Avallone Wind Energy - Aerospace Engineering
C. Teruna Wind Energy - Aerospace Engineering
Research Group
Wind Energy (Aerospace Engineering) (TU Delft)
Copyright: © 2019 G. Bampanis, M. Roger, D. Ragni, F. Avallone, C. Teruna
DOI
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https://doi.org/10.2514/6.2019-2741
More Info
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Published Date

2019

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Wind Energy

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.

Files

6.2019_2741.pdf
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