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Turbulent boundary layer investigation with multiple camera PIV

Dumitra, Michnea and Knopp, Tobias and Schanz, Daniel and Schröder, Andreas and Kähler, Christian (2012) Turbulent boundary layer investigation with multiple camera PIV. 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 09.- 12. Jul. 2012, Lisbon, Portugal.

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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2012/program.asp

Abstract

A multi-camera experimental setup was used for resolving the turbulent boundary layer on a large model installed in the atmospheric wind tunnel at the Universität der Bundeswehr München. The flow was resolved instantaneously over 3m in stream-wise extent. The consecutive application of optical measurements with higher resolution led to the exposition of the scale multitude appearing in turbulent boundary layers at higher Reynolds numbers. The vast data base is used for flow-mechanical analysis of the governing physical laws and mechanistic modeling based on coherent structures. First results for the mean-flow velocity profiles and for the integral boundary layer quantities are presented and the different particle image velocimetry (PIV) approaches, i.e., mono-PIV, stereo PIV and longe-range PIV are compared, including their predictions for the logarithmic law-of-the-wall and its coefficients. Additionally, the main structure in terms of the fluctuating stream-wise velocity is analyzed.

Document Type:Conference or Workshop Item (Other)
Title:Turbulent boundary layer investigation with multiple camera PIV
Authors:
AuthorsInstitution or Email of Authors
Dumitra, MichneaUniBw München
Knopp, TobiasUNSPECIFIED
Schanz, DanielUNSPECIFIED
Schröder, AndreasUNSPECIFIED
Kähler, ChristianUniBw München
Date:2012
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 1
Series Name:Conference Proceedings online
Status:Published
Keywords:Particle Image Velocimetry (PIV), mono-PIV, stereo PIV, turbulent boundary layer
Event Title:16th International Symposium on Applications of Laser Techniques to Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:09.- 12. Jul. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation
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: Ilka Micknaus
Deposited On:17 Jul 2012 16:05
Last Modified:09 Oct 2012 15:05

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