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Investigation of scaling laws in a turbulent boundary layer flow with adverse pressure gradient using PIV

Knopp, Tobias and Buchmann, N. A. and Schanz, Daniel and Eisfeld, Bernhard and Cierpka, Christian and Hain, Rainer and Schröder, Andreas and Kähler, Christian (2015) Investigation of scaling laws in a turbulent boundary layer flow with adverse pressure gradient using PIV. Journal of Turbulence, 16 (3), pp. 250-272. Taylor & Francis. doi: 10.1080/14685248.2014.943906. ISSN 1468-5248.

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/14685248.2014.943906


We present an experimental investigation and data analysis of a turbulent boundary layer flow at a significant adverse pressure gradient at Reynolds number up to Re-theta=10000. We combine large-scale PIV with microscopic PIV for measuring the near wall region including the viscous sublayer. We investigate scaling laws for the mean velocity and for the total shear stress in the inner layer. In the inner part the mean velocity can be fitted by a log-law. In the outer part of the inner layer the log-law ceases to be valid. Instead, a modified log-law gives a good fit, which is given in terms of the pressure gradient parameter and a parameter for the mean inertial effects. Finally we describe and validate a simple quantitative model for the total shear stress distribution which is local in wall-normal direction without streamwise history effects.

Item URL in elib:https://elib.dlr.de/89049/
Document Type:Article
Additional Information:Published online: 23 Jan 2015
Title:Investigation of scaling laws in a turbulent boundary layer flow with adverse pressure gradient using PIV
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Knopp, Tobiastobias.knopp (at) dlr.deUNSPECIFIED
Buchmann, N. A.Monash UniversityUNSPECIFIED
Schanz, Danieldaniel.schanz (at) dlr.deUNSPECIFIED
Eisfeld, Bernhardbernhard.eisfeld (at) dlr.deUNSPECIFIED
Cierpka, ChristianUni BW MünchenUNSPECIFIED
Hain, RainerUni BW München, Inst f Strömungsmechanik und AerodynamikUNSPECIFIED
Schröder, Andreasandreas.schroeder (at) dlr.deUNSPECIFIED
Kähler, ChristianUniBw MünchenUNSPECIFIED
Journal or Publication Title:Journal of Turbulence
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1080/14685248.2014.943906
Page Range:pp. 250-272
Publisher:Taylor & Francis
Keywords:turbulent boundary layer, adverse pressure gradient, law of the wall, log-law
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: Braunschweig , 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:12 Feb 2015 12:42
Last Modified:05 Aug 2021 12:32

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