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Trailing-Edge Noise Data Quality Assessment for CAA Validation

Herr, Michaela and Appel, Christina and Dierke, Jürgen and Ewert, Roland (2010) Trailing-Edge Noise Data Quality Assessment for CAA Validation. In: AIAA Paper 2010-3877. 16th AIAA/CEAS Aeroacoustics Conference, 7.-9. Juni 2010, Stockholm, Schweden.

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Official URL: http://www.aiaa.org

Abstract

The paper provides a detailed reexamination of previously published trailing-edge (TE) noise experimental data as acquired in DLR's low-noise open-jet Acoustic Wind Tunnel Braunschweig (AWB). The objective is to set up a parametric reference data base to be later used for CAA validation purposes. A modular plate airfoil with variable chord length was used to investigate Reynolds number effects on both near field quantities and farfield sound. The original data base, including corrected farfield TE noise spectra as well as turbulent boundary-layer (TBL) characteristics, has been extended by unsteady surface pressure measurements in the TE region. Limitations and weaknesses of the applied measurement techniques are pinpointed by comparisons with independent data sets using alternative measurement approaches. Comparisons include also available semi-empirical prediction models for surface pressure spectra as well as for farfield TE sound emission. First RANS-based CAA prediction results using stochastic source models show essential agreement with the measurement data.

Item URL in elib:https://elib.dlr.de/68190/
Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Online Proceedings
Title:Trailing-Edge Noise Data Quality Assessment for CAA Validation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Herr, Michaelamichaela.herr (at) dlr.deUNSPECIFIED
Appel, Christinachristina.appel (at) dlr.deUNSPECIFIED
Dierke, Jürgenjuergen.dierke (at) dlr.deUNSPECIFIED
Ewert, Rolandroland.ewert (at) dlr.deUNSPECIFIED
Date:June 2010
Journal or Publication Title:AIAA Paper 2010-3877
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:airframe noise, computational aeroacoustics, validation data, trailing-edge noise, Hinterkantenlärm, Validierungsmessungen
Event Title:16th AIAA/CEAS Aeroacoustics Conference
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:7.-9. Juni 2010
Organizer:AIAA/CEAS
HGF - Research field:Aeronautics, Space and Transport (old)
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, Michaela
Deposited On:18 Jan 2011 10:10
Last Modified:18 Jan 2011 10:10

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