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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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|
|Title:||Investigation of transitional structures in artificially excited boundary layer flows by means of stereo and multi-plane PIV|
|Journal or Publication Title:||Recent Results in Laminar-Turbulent Transition|
|In ISI Web of Science:||No|
|Volume:||Volume 86 Seite 255 - 268|
|Publisher:||Springer Verlag Berlin Heidelberg New York|
|Series Name:||Notes on Nummerical Fluid Mechanics and Multidisciplinary Design|
|Keywords:||Stereo PIV, transition, boundary layer, turbulent spot, airfoil|
|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|
|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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