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Investigation of near wall Turbulence using Multiplane Stereo PIV

Kähler, C. and Stanislas, M. and Eckelmann, H . (2001) Investigation of near wall Turbulence using Multiplane Stereo PIV. In: CD ROM Proceedings, Proceedings, 1-. 4th International Symposium on Particle Image Velocimetry, Göttingen, Germany, September 17-19, 2001.

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Abstract

The joint probability density functions of the streamwise/wall-normal (uv) and streamwise/spanwise (uw) velocity fluctuations undergo a strong structual change in the near wall region of a fully developed turbulent boundary layer flow when approaching the wall. In order to understand the physics behind this experimental result, the spatio-temporal flow structure was investigated at several y locations, both simultaneously and separated in time, by means of multiplane stereo PIV. The size, shape and intensity of various coherent velocity structures could be determined from the spatio-temporal cross correlation functions after subdividing the flow field according to the quadrand splitting technique. Furthermore the convection velocity of the different coherent structures was measured

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2003, monograph_id=DLR-Mitteilung 2001-03,
Title:Investigation of near wall Turbulence using Multiplane Stereo PIV
Authors:
AuthorsInstitution or Email of Authors
Kähler, C.UNSPECIFIED
Stanislas, M.UNSPECIFIED
Eckelmann, H .UNSPECIFIED
Date:2001
Journal or Publication Title:CD ROM Proceedings
Volume:Proceedings
Page Range:1-
Editors:
EditorsEmail
DLR, Dr. J. Kompenhans, Institut für Aerodynamik und Strömungstechnik, Experimentelle Verfahren, Göttingen, Germany, UNSPECIFIED
Series Name:PIV'01
Status:Published
Keywords:Multiple plane stereo PIV, Turbulence, Coherent structures, Joint-PDF, spatio-temporal correlation functions
Event Title:4th International Symposium on Particle Image Velocimetry, Göttingen, Germany, September 17-19, 2001
Organizer:AS-EV
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):L - Flight Physics
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Ilka Micknaus
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:15

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