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Experimental investigation of a turbulent boundary layer subject to an adverse pressure gradient at Re-theta up to 10000 using large-scale and long-range microscopic particle imaging

Knopp, Tobias and Buchmann, Nicolas A. and Schanz, Daniel and Schröder, Andreas and Cierpka, Christian and Hain, Rainer and Kähler, Christian (2015) Experimental investigation of a turbulent boundary layer subject to an adverse pressure gradient at Re-theta up to 10000 using large-scale and long-range microscopic particle imaging. In: Progress in Wall Turbulence 2 - Understanding and Modeling ERCOFTAC Series, 1 (-). Springer International Publishing. pp. 271-281. ISBN 978-90-481-9602-9. ISSN 1382-4309

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

Abstract

We present an experimental investigation and data analysis of a turbulent boundary layer flow at a significant adverse pressure gradient for two Reynolds numbers Re-theta=6200 and Re-theta=8000. We perform detailed multi-resolution measurements by combining large-scale and long-range microscopic particle imaging. We investigate scaling laws for the mean velocity and for the total shear stress in the inner layer. In the inner part of the inner layer the mean velocity can be fitted by a log-law. In the outer part a modified log-law provides a good fit, which depends on the pressure gradient parameter and on a parameter for the mean inertial effects. Emphasis is on the Reynolds number effects on the mean velocity and shear stress.

Item URL in elib:https://elib.dlr.de/101244/
Document Type:Contribution to a Collection
Title:Experimental investigation of a turbulent boundary layer subject to an adverse pressure gradient at Re-theta up to 10000 using large-scale and long-range microscopic particle imaging
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Knopp, Tobiastobias.knopp (at) dlr.deUNSPECIFIED
Buchmann, Nicolas A.nicolas.buchmann (at) unibw.deUNSPECIFIED
Schanz, Danieldaniel.schanz (at) dlr.deUNSPECIFIED
Schröder, Andreasandreas.schroeder (at) dlr.deUNSPECIFIED
Cierpka, ChristianUniBW MünchenUNSPECIFIED
Hain, RainerUni BW München, Inst f Strömungsmechanik und AerodynamikUNSPECIFIED
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_24
Page Range:pp. 271-281
Editors:
EditorsEmail
Stanislas, MichelCNRS, LML
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:turbulent boundary layer, adverse pressure gradient, log-law, scaling law, PIV, PTV, particle imaging
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
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:18 Dec 2015 13:38
Last Modified:10 May 2016 23:39

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