Schröder, Andreas and Geisler, Reinhard and Staack, Karsten and Henning, Arne and Wieneke, Berhard and Elsinga, G.E. and Scarano, Fluvio and Poelma, Christian and Westerweel, Jerry (2009) Lagrangian and Eulerian aspects of a turbulent boundary layer flow - An investigation using time-resolved tomographic PIV. Progress in Wall Turbulence: Understanding and modelling, 2009-04-21 - 2009-04-23, Lille (France).
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The momentum exchange mechanisms in a turbulent boundary layer (TBL) flow are of manifold temporal and spatial scales and governed by the organization of self-sustaining coherent flow structures driven by entrained high momentum fluid. Generic flow structures such as hairpin-like vortices and spanwise alternating wall bounded low- and high-speed streaks have been observed and extensively analyzed with both experimental and numerical methods, e.g. by means of PIV or DNS. In many studies the role of these structures for the wall normal and spanwise fluid exchange has been highlighted mostly within an Eulerian reference frame. But for a full understanding of the momentum exchange in turbulent wall flows a step towards a spatially resolved Lagrangian frame of reference would be advantageous. The data achieved from the present application of time-resolved tomographic PIV to a flat plate turbulent boundary layer flow in a water tunnel at Re ~ 2460 enables for the first time a topological investigation of the flow structures and related particle motions within a temporally and spatially resolved Lagrangian and Eulerian reference frame.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Additional Information:||Book of Abstracts|
|Title:||Lagrangian and Eulerian aspects of a turbulent boundary layer flow - An investigation using time-resolved tomographic PIV|
|In ISI Web of Science:||No|
|Series Name:||Workshop Proceedings|
|Keywords:||Lagrangian, turbulent boundary layer, tomographic PIV|
|Event Title:||Progress in Wall Turbulence: Understanding and modelling|
|Event Location:||Lille (France)|
|Event Type:||international Conference|
|Event Dates:||2009-04-21 - 2009-04-23|
|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|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||27 Jul 2009 10:12|
|Last Modified:||27 Jul 2009 10:12|
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