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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. Experiments in Fluids, Vol. 36, pp. 82-90. Springer Verlag. DOI: 10.1007/s00348-003-0644-7. ISBN 348-003-0644-7. ISSN 0723-4864.

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Official URL: http://link.springer.com/article/10.1007/s00348-003-0644-7

Abstract

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:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:Investigation of a turbulent spot using multi-plane stereo PIV
Authors:
AuthorsInstitution or Email of Authors
Schröder, AndreasUNSPECIFIED
Kompenhans, JürgenUNSPECIFIED
Date:2004
Journal or Publication Title:Experiments in Fluids
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:Vol. 36
DOI:10.1007/s00348-003-0644-7
Page Range:pp. 82-90
Publisher:Springer Verlag
Series Name:Sonderdruck
ISSN:0723-4864
ISBN:348-003-0644-7
Status:Published
Keywords:Multiplane stereo PIV, Turbulent spot, boundary layer, coherent structures, transition
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
Deposited By: Ilka Micknaus
Deposited On:31 Jan 2006
Last Modified:04 Jun 2013 14:56

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