Suryadi, Alexandre (2019) Prediction of Trailing-Edge Noise for Separated Turbulent Boundary Layers. In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 142, pp. 769-779. Springer, Cham. 21st STAB/DGLR Symposium, 6-7 Nov 2018, Darmstadt, Germany. DOI: 10.1007/978-3-030-25253-3_73 ISBN 978-3-030-25252-6 ISSN 1612-2909
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Official URL: https://doi.org/10.1007/978-3-030-25253-3_73
Abstract
This paper presents a semi-empirical low-order prediction of the trailing-edge noise of separated turbulent boundary layers. The prediction focuses on obtaining the low-frequency spectral peak of the far-field sound pressure level by modeling the measured wavenumber-frequency spectrum using regression analysis and integrating that spectrum in the manner of Howe's radiation model. Surface pressure fluctuations upstream of the trailing-edge of a DU96-W-180 blade section were measured using miniature pressure transducers, and the trailing-edge noise was measured using a directional microphone. The prediction showed that the far-field sound pressure level reached its maximum below the frequency limit of the directional microphone measurement, between 400 Hz-500 Hz depending on the freestream velocity and the predicted spectrum varied between +/-0.5 dB given the inaccuracies of the regression model.
Item URL in elib: | https://elib.dlr.de/129640/ | |||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||||||||
Title: | Prediction of Trailing-Edge Noise for Separated Turbulent Boundary Layers | |||||||||||||||||||||
Authors: |
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Date: | 27 September 2019 | |||||||||||||||||||||
Journal or Publication Title: | 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics | |||||||||||||||||||||
Refereed publication: | Yes | |||||||||||||||||||||
Open Access: | Yes | |||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||
In SCOPUS: | Yes | |||||||||||||||||||||
In ISI Web of Science: | No | |||||||||||||||||||||
Volume: | 142 | |||||||||||||||||||||
DOI : | 10.1007/978-3-030-25253-3_73 | |||||||||||||||||||||
Page Range: | pp. 769-779 | |||||||||||||||||||||
Editors: |
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Publisher: | Springer, Cham | |||||||||||||||||||||
Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | |||||||||||||||||||||
ISSN: | 1612-2909 | |||||||||||||||||||||
ISBN: | 978-3-030-25252-6 | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | turbulent boundary layer,flow separation,noise prediction | |||||||||||||||||||||
Event Title: | 21st STAB/DGLR Symposium | |||||||||||||||||||||
Event Location: | Darmstadt, Germany | |||||||||||||||||||||
Event Type: | national Conference | |||||||||||||||||||||
Event Dates: | 6-7 Nov 2018 | |||||||||||||||||||||
Organizer: | Technische Universität Darmstadt | |||||||||||||||||||||
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: | Suryadi, Alexandre | |||||||||||||||||||||
Deposited On: | 19 Mar 2020 08:18 | |||||||||||||||||||||
Last Modified: | 28 Sep 2020 03:00 |
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