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Herr, Michaela and Suryadi, Alexandre and Martens, Susanne (2016) Comparative Noise Measurements at Serrated and Porous Trailing-Edge Modifications. Serration Technology on Airfoil: Unsteady Aerodynamic and Aeroacoustics, 17.-21. Oktober 2016, Leiden, Niederlande.
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Abstract
The presentation summarizes the outcome from recent measurements in the Acoustic Wind-Tunnel Braunschweig (AWB), conducted within the framework of the German wind energy project BELARWEA. Several modifications of the trailing-edge region of two different 2D airfoils were acoustically evaluated. The noise reduction potential of slotted, microperforated and serrated trailing-edge modifications are compared at varying test velocities, angles of attack and boundary-layer transition regions. The limitations of current trailing edge noise measurement setups are discussed in depth and a tentative interpretation of noise reduction mechanisms of serrations vs. alternative noise reduction technologies is provided.
| Item URL in elib: | https://elib.dlr.de/109600/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
| Title: | Comparative Noise Measurements at Serrated and Porous Trailing-Edge Modifications | ||||||||||||||||
| Authors: |
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| Date: | 17 October 2016 | ||||||||||||||||
| Refereed publication: | No | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | Trailing-Edge Noise Measurements, Trailing-Edge Noise, Noise Reduction Technology, Serrations, Brushes, Wind Turbine Noise | ||||||||||||||||
| Event Title: | Serration Technology on Airfoil: Unsteady Aerodynamic and Aeroacoustics | ||||||||||||||||
| Event Location: | Leiden, Niederlande | ||||||||||||||||
| Event Type: | Workshop | ||||||||||||||||
| Event Dates: | 17.-21. Oktober 2016 | ||||||||||||||||
| Organizer: | Lorentz Center, Leiden | ||||||||||||||||
| 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: | 15 Dec 2016 10:41 | ||||||||||||||||
| Last Modified: | 29 Mar 2023 00:07 |
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