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Herr, Michaela (2006) Experimental Study on Noise Reduction through Trailing-Edge Brushes. Springer Verlag, Berlin-Heidelberg-New York. ISBN 3-540-33286-3.
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Abstract
Within an experimental trailing-edge noise reduction study in the Aeroacoustic Wind Tunnel Braunschweig (AWB) both acoustic and aerodynamic effects of trailing-edge brush-devices were examined. Directional microphone and hot-wire measurements were undertaken on a zero-lift generic plate model (Re = 2.1 to 7.9 x 10<sup>6</sup>). Various brush concepts were tested to clarify the functional relationship between design parameters and the ensuing aeroacoustic properties. First results of this ongoing work indicate a significant source noise reduction in excess of 10 dB, thereby revealing two relevant noise reduction mechanisms. In addition to broadband turbulent boundary-layer trailing-edge noise also narrow band contributions due to vortex shedding from the edge were alleviated.
| Item URL in elib: | https://elib.dlr.de/47783/ | ||||||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||||||
| Additional Information: | Presented at the 14th DGLR-Symposium of STAB, ZARM/University of Bremen, 16–18 Nov. 2004 | ||||||||||||||||||||||||
| Title: | Experimental Study on Noise Reduction through Trailing-Edge Brushes | ||||||||||||||||||||||||
| Authors: |
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| Date: | 2006 | ||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||
| Volume: | 92 | ||||||||||||||||||||||||
| Page Range: | pp. 365-372 | ||||||||||||||||||||||||
| Editors: |
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| Publisher: | Springer Verlag, Berlin-Heidelberg-New York | ||||||||||||||||||||||||
| Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||
| ISBN: | 3-540-33286-3 | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| Keywords: | Trailing-Edge Noise, Noise Reduction, Trailing-Edge Brushes | ||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||||||||||
| HGF - Program Themes: | L VU - Air Traffic and Environment (old) | ||||||||||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||||||||||
| DLR - Program: | L VU - Air Traffic and Environment | ||||||||||||||||||||||||
| DLR - Research theme (Project): | L - Quiet Air Traffic (old) | ||||||||||||||||||||||||
| Location: | Braunschweig | ||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Technical Acoustics | ||||||||||||||||||||||||
| Deposited By: | Herr, Dr. Michaela | ||||||||||||||||||||||||
| Deposited On: | 24 Apr 2007 | ||||||||||||||||||||||||
| Last Modified: | 15 Mar 2024 07:31 |
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