Investigation of a turbulent spot using multi-plane stereo PIV
Schröder, Andreas and Kompenhans, Jürgen (2004) Investigation of a turbulent spot using multi-plane stereo PIV. In: Experiments in Fluids Sonderdruck, 36. Springer Verlag. pp. 82-90. ISBN 348-003-0644-7.
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The multi-plane stereo PIV (MSPIV) technique has been applied to an investigation of the spatial and temporal development of turbulent spots in a laminar flat-plate boundary layer flow with a slight adverse pressure gradient. The spot was induced by a locally blown injection at Re = 318 calculated, with x as the distance from the leading-edge, and the measurement volume was located at different downstream positions, at Reynolds numbers between 448=Re=550. For the calculation of the velocity vectors, 32 X 32 pixel interrogation windows were used, corresponding to a resolution down to 1.6 mm in each direction of physical space. On the basis of a large number of evaluated instantaneous 3- and 2-component velocity vector fields, measured synchronously and separated in space, or with different time separations in one or two planes, the technique enabled the possibility of determining several statistical quantities of fluid mechanical significance: ensemble averages and velocity fluctuations (u´, v´, w´), rms-fields, Galilean accelerations, probability density functions (PDF) and space-time-correlations of the velocity fluctuations, the instantaneous Reynolds stresses (u´v´) of all four quadrants and the y-component of vorticity.
|Document Type:||Contribution to a Collection|
|Title:||Investigation of a turbulent spot using multi-plane stereo PIV|
|Journal or Publication Title:||Experiments in Fluids|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 82-90|
|Keywords:||Multiplane stereo PIV, Turbulent spot, boundary layer, coherent structures, transition|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L - no assignement|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L ST - Starrflüglertechnologien|
|DLR - Research theme (Project):||L - Flight Physics|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||31 Jan 2006|
|Last Modified:||14 Jan 2010 19:17|
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