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Noise Reduction Technologies for Wind Turbines

Herr, Michaela and Ewert, Roland and Faßmann, Benjamin and Rautmann, Christof and Martens, Susanne and Rohardt, Claas-Hinrik and Suryadi, Alexandre (2017) Noise Reduction Technologies for Wind Turbines. In: New Results in Numerical and Experimental Fluid Mechanics XI, 136, pp. 611-621. Springer International Publishing. 20. DGLR/STAB Symposium, 8.-9.11.2016, Braunschweig, Deutschland. doi: 10.1007/978-3-319-64519-3_55. ISBN 978-3-319-64518-6. ISSN 1612-2909.

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Official URL: http://www.springer.com/de/book/9783319645186

Abstract

Results from a numerical and experimental aeroacoustic assessment of 2D wind turbine blade sections are presented. CFD/CAA-based predictions using a synthetic turbulence method were conducted at a NACA 64-618 profile as well as at a new low-noise airfoil design RoH-W-18%c37. Validation experiments were performed in DLR's Acoustic Wind-Tunnel Braunschweig (AWB) for varying transition locations. A trailing-edge noise reduction benefit of 2-4 dB in overall sound pressure level was predicted for the new airfoil under design conditions. A large laminar extent of the boundary layer significantly reduces the noise emission (by up to 8~dB) compared to equivalent cases with forced transition at the leading edge. An additional noise reduction (with realistic reductions of the peak levels by 4-6 dB) was accomplished by flow-permeable trailing-edge extensions which were successfully transferred to the two profiles from forerunner aerospace-related studies.

Item URL in elib:https://elib.dlr.de/118642/
Document Type:Conference or Workshop Item (Speech)
Title:Noise Reduction Technologies for Wind Turbines
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Herr, MichaelaUNSPECIFIEDhttps://orcid.org/0009-0000-7275-7078154899490
Ewert, RolandUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Faßmann, BenjaminUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rautmann, ChristofUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Martens, SusanneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rohardt, Claas-HinrikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Suryadi, AlexandreUNSPECIFIEDhttps://orcid.org/0000-0002-5129-5510UNSPECIFIED
Date:2017
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics XI
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:136
DOI:10.1007/978-3-319-64519-3_55
Page Range:pp. 611-621
Editors:
EditorsEmailEditor's ORCID iDORCID Put Code
Dillmann, AndreasDLR GöttingenUNSPECIFIEDUNSPECIFIED
Heller, GerdAirbus BremenUNSPECIFIEDUNSPECIFIED
Krämer, EwaldUni StuttgartUNSPECIFIEDUNSPECIFIED
Wagner, ClausDLR GöttingenUNSPECIFIEDUNSPECIFIED
Bansmer, StephanTU BraunschweigUNSPECIFIEDUNSPECIFIED
Radespiel, RolfTU BraunschweigUNSPECIFIEDUNSPECIFIED
Semaan, RichardTU BraunschweigUNSPECIFIEDUNSPECIFIED
Publisher:Springer International Publishing
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-319-64518-6
Status:Published
Keywords:wind energy, flow-induced sound, aeroacoustics, trailing-edge noise, Acoustic Wind-Tunnel Braunschweig, AWB, BMWi-project BELARWEA
Event Title:20. DGLR/STAB Symposium
Event Location:Braunschweig, Deutschland
Event Type:national Conference
Event Dates:8.-9.11.2016
Organizer:Deutsche Strömungsmechanische Arbeitsgemeinschaft
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 (old)
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Seyfried, Beate
Deposited On:31 Jan 2018 14:29
Last Modified:07 Mar 2024 18:58

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