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Wall pressure signature in compressible turbulent boundary layers

Buchmann, Nicolas A. and Scharnovski, Sven and Ehrenfried, Klaus and Kähler, Christian (2015) Wall pressure signature in compressible turbulent boundary layers. In: Progress in Wall Turbulence 2 - Understanding and Modeling ERCOFTAC Series, 1 (-). Springer International Publishing. pp. 93-102. ISBN 978-90-481-9602-9. ISSN 1382-4309

Full text not available from this repository.

Official URL: http://www.springer.com/de/book/9783319203874

Abstract

Large - scale turbulent flow structures associated with positive and negative wall pressure fluctuations in a compressible turbulent boundary layer are investigated. Experiments are conducted in a closed-loop transonic wind tunnel at Ma = 0.5 - 0.8, Ret=5,100-9,500 with combined velocity field and wall pressure measurements. Both velocity and pressure statistics are analysed and compare well with existing low Mach number data. Spatial two-point correlation is applied to determine the size and orientation of the large - scale flow structures, which depending on the wall height have an averaged length scales of 4-6 δ and a maximum inclination angel of ≈ 12o - 13o . The wall pressure fluctuations are associated with shear layer structures and it is shown that positive pressure fluctuations are correlated with low speed large - scale flow structure over streamwise extents of 4 - 5 δ.

Item URL in elib:https://elib.dlr.de/101328/
Document Type:Contribution to a Collection
Title:Wall pressure signature in compressible turbulent boundary layers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buchmann, Nicolas A.nicolas.buchmann (at) unibw.deUNSPECIFIED
Scharnovski, SvenUniBW MünchenUNSPECIFIED
Ehrenfried, Klausklaus.ehrenfried (at) dlr.deUNSPECIFIED
Kähler, ChristianUniBw MünchenUNSPECIFIED
Date:2015
Journal or Publication Title:Progress in Wall Turbulence 2 - Understanding and Modeling
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:1
DOI :10.1007/978-3-319-20388-1_8
Page Range:pp. 93-102
Editors:
EditorsEmail
Stanislas, MichelCNRS, LML, France
Jimenez, JavierPolytechnic University of Madrid, Spain
Marusic, IvanUniversity of Melbourne, Australia
Publisher:Springer International Publishing
Series Name:ERCOFTAC Series
ISSN:1382-4309
ISBN:978-90-481-9602-9
Status:Published
Keywords:Compressible turbulent boundary layer, flow structures
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Micknaus, Ilka
Deposited On:18 Dec 2015 13:46
Last Modified:10 May 2016 23:39

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