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Investigation of transitional structures in artificially excited boundary layer flows by means of stereo and multi-plane PIV

Schröder, A. and Kompenhans, J. (2003) Investigation of transitional structures in artificially excited boundary layer flows by means of stereo and multi-plane PIV. In: Recent Results in Laminar-Turbulent Transition Notes on Nummerical Fluid Mechanics and Multidisciplinary Design, Volume 86 Seite 255 - 268. Springer Verlag Berlin Heidelberg New York. ISBN 3-540-40490-2.

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Abstract

Two different experiments have been carried out by means of multi-plane and stereo PIV in order to analyze the structures of late transitional boundary layer flows. To achieve a better understanding of the characteristics and structures of ''natural'' transition scenarios, measurements in different complex initiated transitional boundary layer flows on a wing glove of a 2-D airfoil have been performed. Additionally, artificially-generated turbulent spots in a laminar flat-plate boundary layer have been investigated in detail. Instantaneous velocity vector fields measured in different planes parallel to the wall and special statistical approaches applied to the vector fields of turbulent spots, yield valuable information about the structures leading to the breakdown process and governing the turbulent mixing of the boundary layer flow.

Document Type:Contribution to a Collection
Additional Information: LIDO-Berichtsjahr=2003,
Title:Investigation of transitional structures in artificially excited boundary layer flows by means of stereo and multi-plane PIV
Authors:
AuthorsInstitution or Email of Authors
Schröder, A.UNSPECIFIED
Kompenhans, J.UNSPECIFIED
Date:2003
Journal or Publication Title:Recent Results in Laminar-Turbulent Transition
Refereed publication:Yes
In ISI Web of Science:No
Volume:Volume 86 Seite 255 - 268
Editors:
EditorsEmail
Siegfried Wagner, UNSPECIFIED
Markus Kloker, UNSPECIFIED
Ulrich Rist, UNSPECIFIED
Publisher:Springer Verlag Berlin Heidelberg New York
Series Name:Notes on Nummerical Fluid Mechanics and Multidisciplinary Design
ISBN:3-540-40490-2
Status:Published
Keywords:Stereo PIV, transition, boundary layer, turbulent spot, airfoil
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 19:17

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