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Lagrangian aspects of coherent structures in a turbulent boundary layer flow using TR-Tomo PIV and PTV

Schröder, Andreas and Geisler, Reinhard and Sieverling, Arne and Wieneke, Bernhard and Henning, Arne and Scarano, Fulvio and Elsinga, Gerrit and Poelma, Christian (2009) Lagrangian aspects of coherent structures in a turbulent boundary layer flow using TR-Tomo PIV and PTV. 8TH INTERNATIONAL SYMPOSIUM ON PARTICLE IMAGE VELOCIMETRY - PIV09, 25. - 28. August 2009, Melbourne, Victoria, Australia.

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Official URL: http://ltrac.eng.monash.edu.au/PIV09/Home.html


Coherent structures and their role for the fluid exchange mechanisms in the logarithmic layer of a turbulent boundary layer is the focus of the present paper. Extensive experiments have been performed in the water tunnel at TU Delft measuring the particle motion within a volume of a turbulent boundary layer flow along a flat plate at a free stream velocity of 0.53 m/s at Reθ ~ 2460 based on momentum thickness by using time-resolved- tomo PIV and PTV. This data enables a spatio-temporal and topological investigation of the flow structures and related particle motions within a temporally and spatially highly resolved Lagrangian and Eulerian reference frame. Flow statistics of physically relevant quantities from both viewpoints are evaluated in terms of PDF´s, space-timecorrelations, conditional averaging as well as the analysis of single events in order to enhance the understanding of wall bounded turbulence and highlight the potential of this novel technique for turbulence characterisation.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Lagrangian aspects of coherent structures in a turbulent boundary layer flow using TR-Tomo PIV and PTV
AuthorsInstitution or Email of Authors
Schröder, AndreasUNSPECIFIED
Geisler, ReinhardUNSPECIFIED
Sieverling, ArneUNSPECIFIED
Wieneke, BernhardLaVision, Göttingen, D
Henning, ArneTU-Berlin
Scarano, FulvioTU-Delft, NL
Elsinga, GerritTU-Delft, NL
Poelma, ChristianTU-Delft, NL
Refereed publication:No
In ISI Web of Science:No
Volume:Plenary 4, Session BA2
Page Range:pp. 1-4
Series Name:CD-ROM Conference Proceedings
Keywords:turbulent boundary layer (TBL), Lagrangian, TR-Tomo PIV
Event Location:Melbourne, Victoria, Australia
Event Type:international Conference
Event Dates:25. - 28. August 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:03 Nov 2009 13:03
Last Modified:18 Nov 2009 11:35

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