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Technologien zur Schallreduzierung für Windkraftanlagen

Herr, Michaela (2016) Technologien zur Schallreduzierung für Windkraftanlagen. 20. DGLR-Fach-Symposium der STAB, 08.-09. Nov. 2016, Braunschweig, Deutschland.

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Official URL: https://www.tu-braunschweig.de/stab2016


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 AcousticWind-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/104733/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Vortrag bereits angenommen & veröffentlicht im Rahmen des STAB-Symposiums im November 2016, schriftlicher Tagungsbeitrag seit November 2016 im Reviewprozess zur Veröffentlichung in der Springer-Serie Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Title:Technologien zur Schallreduzierung für Windkraftanlagen
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:November 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 156-157
Keywords:BELARWEA project, low-noise profile design, aeroacoustic assessment, CAA, Wind turbine noise, noise reduction, trailing-edge noise
Event Title:20. DGLR-Fach-Symposium der STAB
Event Location:Braunschweig, Deutschland
Event Type:international Conference
Event Dates:08.-09. Nov. 2016
Organizer:Fachgemeinschaft STAB
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:other
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Wind Energy (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Herr, Michaela
Deposited On:22 Dec 2016 11:11
Last Modified:22 Dec 2016 11:11

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