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Improving the performance of aeroacoustic measurements beneath a turbulent boundary layer in a wake flow

Haxter, Stefan and Spehr, Carsten and Hartmann, Michael and Ocker, Jörg and Tokuno, Hironori and Wickern, Gerhard (2014) Improving the performance of aeroacoustic measurements beneath a turbulent boundary layer in a wake flow. In: 20th AIAA/CEAS Aeroacoustics Conference 2014 (3289), pp. 1-18. American Institute of Aeronautics and Astronautics Inc.. 20th AIAA/CEAS Aeroacoustics Conference 2014, 16. - 20. June 2014, Atlanta, Georgia, USA. doi: 10.2514/6.2014-3289. ISBN 978-162410285-1.

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Official URL: https://doi.org/10.2514/6.2014-3289


Experimental measurement and subsequent numerical prediction of the excitation of at plates or car windows beneath a turbulent boundary layer have become important for the development of novel cars and airplanes. A wavenumber spectrum can be used to define the load on a plat caused by the pressure fluctuations on the surface. Wavenumber spectra from measurements are used to validate the numerical predictions of the acoustic and hydrodynamic portions of the pressure fluctuations. When measuring wavenumber spectra, the design of the experiment can have a large in fluence on the outcome. In this paper, the effects of both array design and the application of deconvolution algorithms on the experimental determination of the wavenumber-frequency spectrum are evaluated.

Item URL in elib:https://elib.dlr.de/85460/
Document Type:Conference or Workshop Item (Speech)
Additional Information:AIAA 2014-3289, 20th AIAA/CEAS Aeroacoustics Conference, DOI: 10.2514/6.2014-3289
Title:Improving the performance of aeroacoustic measurements beneath a turbulent boundary layer in a wake flow
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Haxter, Stefanstefan.haxter (at) dlr.dehttps://orcid.org/0000-0002-9232-2802
Spehr, Carstencarsten.spehr (at) dlr.dehttps://orcid.org/0000-0002-2744-3675
Hartmann, MichaelVolkswagen AG, Wolfsburg, GermanyUNSPECIFIED
Ocker, JörgPorsche AG, Dept. EGA3, 71287 Weissach, GermanyUNSPECIFIED
Tokuno, HironoriDaimler AG, D-71059 Sindelfingen, GermanyUNSPECIFIED
Wickern, GerhardAudi AG, D-85045, Ingolstadt, GermanyUNSPECIFIED
Date:June 2014
Journal or Publication Title:20th AIAA/CEAS Aeroacoustics Conference 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2014-3289
Page Range:pp. 1-18
Publisher:American Institute of Aeronautics and Astronautics Inc.
Series Name:Conference Proceedings online
Keywords:wavenumber spectrum, car side mirror, array optimization, deconvolution algorithm
Event Title:20th AIAA/CEAS Aeroacoustics Conference 2014
Event Location:Atlanta, Georgia, USA
Event Type:international Conference
Event Dates:16. - 20. June 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:17 Jul 2014 10:07
Last Modified:14 Jul 2020 13:21

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