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Trailing Edge Noise Prediction of Wind Turbine Airfoils: A Benchmark Exercise

Ferret Gasch, Oriol and Oerlemans, Stefan and Faßmann, Benjamin W. and Herr, Michaela and Bertagnolio, Franck and Fischer, Andreas and Arnold, Benjamin and Lutz, Thorsten (2019) Trailing Edge Noise Prediction of Wind Turbine Airfoils: A Benchmark Exercise. In: AIAA AVIATION 2019, 25th AIAA/CEAS Aeroacoustics Conference (2675), pp. 1-23. 25th AIAA/CEAS Aeroacoustics Conference, 20.-23. Mai 2019, Delft, Niederlande. DOI: 10.2514/6.2019-2675

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Official URL: http://arc.aiaa.org oder https://doi.org/10.2514/6.2019-2675

Abstract

This paper presents a trailing-edge noise prediction study of two state-of-the-art wind turbine airfoils, benchmarked against dedicated aerodynamic and acoustic wind tunnel experiments. Blind predictions were carried out by three institutes with long experience in trailing-edge noise simulation: the German Aerospace Centre (DLR), the Danish Technical University (DTU), and the Institute of Aerodynamics and Gas Dynamics (IAG) at the University of Stuttgart. Experimental data and engineering predictions were provided by Siemens Gamesa Renewable Energy (SGRE). While the aerodynamic predictions generally show good agreement, the acoustic results of the different codes exhibit substantial scatter, even in terms of relative sound pressure levels. This means that for industrial design decisions, where high accuracy is needed (<1 dB), evaluation of the trailing-edge noise for different airfoils still requires the combined application of measurement and simulation tools. Both techniques feature inherent uncertainties and scatter which currently cannot meet the targeted accuracy.

Item URL in elib:https://elib.dlr.de/131990/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Copyright © 2019 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Title:Trailing Edge Noise Prediction of Wind Turbine Airfoils: A Benchmark Exercise
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ferret Gasch, OriolSiemens Gamesa Renewable Energy A/SUNSPECIFIED
Oerlemans, StefanSiemens Gamesa Renewable Energy A/SUNSPECIFIED
Faßmann, Benjamin W.benjamin.fassmann (at) dlr.deUNSPECIFIED
Herr, Michaelamichaela.herr (at) dlr.deUNSPECIFIED
Bertagnolio, FranckDTU Wind Energy, Technical University of DenmarkUNSPECIFIED
Fischer, AndreasDTU Wind Energy, Technical University of DenmarkUNSPECIFIED
Arnold, BenjaminInstitute of Aerodynamics and Gas Dynamics, Universität StuttgartUNSPECIFIED
Lutz, ThorstenInstitute of Aerodynamics and Gas Dynamics, Universität StuttgartUNSPECIFIED
Date:May 2019
Journal or Publication Title:AIAA AVIATION 2019, 25th AIAA/CEAS Aeroacoustics Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2019-2675
Page Range:pp. 1-23
Series Name:AIAA Paper 2019-
Status:Published
Keywords:trailing-edge noise, numerical predictions, validation experiments, benchmarks
Event Title:25th AIAA/CEAS Aeroacoustics Conference
Event Location:Delft, Niederlande
Event Type:international Conference
Event Dates:20.-23. Mai 2019
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Herr, Michaela
Deposited On:09 Dec 2019 15:05
Last Modified:09 Dec 2019 15:05

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