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Experimental investigation of the log-law for an adverse pressure gradient turbulent boundary layer flow at Re up to 10000

Knopp, Tobias and Schanz, Daniel and Schröder, Andreas and Dumitra, Michnea and Kähler, Christian (2012) Experimental investigation of the log-law for an adverse pressure gradient turbulent boundary layer flow at Re up to 10000. Begell House Inc.. Turbulence, Heat & Masstransfer Conference 2012, 23. Sept. - 28. Sept. 2012, Palermo, Italien. ISBN 978-1-56700-302-4

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Official URL: http://www.thmt-12.org

Abstract

We present an experimental investigation of a turbulent boundary layer flow at a significant adverse pressure gradient at Reynolds numberRe up to 10000 using large field PIV. The testcase is designed to start froma zero pressure gradient flow at Re ≈ 8000 with a distinct log-law region following a slowly rising adverse pressure gradient. This allows to reveal a breakdown of the log-law under the effect of the adverse pressure gradient. The region described by the log law is progressively reduced in terms of y+ and then joins into a modified log-law which gives a good fit to the data up to at least y/99 ≈ 0.2.

Item URL in elib:https://elib.dlr.de/79259/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Experimental investigation of the log-law for an adverse pressure gradient turbulent boundary layer flow at Re up to 10000
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Knopp, Tobiastobias.knopp (at) dlr.deUNSPECIFIED
Schanz, DanielUNSPECIFIEDUNSPECIFIED
Schröder, AndreasUNSPECIFIEDUNSPECIFIED
Dumitra, MichneaUniBw MünchenUNSPECIFIED
Kähler, ChristianUniBw MünchenUNSPECIFIED
Date:2012
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Session: 6.2
Page Range:pp. 1-12
Editors:
EditorsEmail
Hanjalic, K.UNSPECIFIED
Nagano, Y.UNSPECIFIED
Borello, D.UNSPECIFIED
Jakirlic, S.UNSPECIFIED
Publisher:Begell House Inc.
Series Name:Conference Proceedings on CD-ROM
ISBN:978-1-56700-302-4
Status:Published
Keywords: turbulent boundary layer, log-law
Event Title:Turbulence, Heat & Masstransfer Conference 2012
Event Location:Palermo, Italien
Event Type:international Conference
Event Dates:23. Sept. - 28. Sept. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Kessler, Martina
Deposited On:14 Dec 2012 11:58
Last Modified:14 Dec 2012 11:58

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