Experiments in Fluids

, Volume 36, Issue 1, pp 114–130 | Cite as

Investigation of the spatio-temporal flow structure in the buffer region of a turbulent boundary layer by means of multiplane stereo PIV

  • C. J. KählerEmail author


In order to examine the physical process associated with the production and transport of turbulence in wall bounded flows, a fully developed turbulent boundary layer flow along a flat plate is investigated in stream-wise span-wise planes at y +≈10, 20, and 30, and Re θ ≈7,800 by using a high-resolution multiplane stereo PIV system. Of particular interest are the structural features of the coherent flow structures, such as their average size and shape, but their intensity, dynamics, and interaction are also examined. The information is deduced from the joint probability density function of the velocity fluctuations and from various correlation, cross-correlation, and conditional-correlation functions. Furthermore, characteristic instantaneous velocity fields are analyzed in order to examine the importance of the individual coherent flow structures for the production of turbulence and the transport of Reynolds stresses.


Velocity Fluctuation Joint Probability Density Function Conditional Correlation Wall Distance Wall Unit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The author would like to thank Prof. M. Stanislas from the Laboratoire de Mécanique de Lille (France), for his essential experimental support and the fruitful cooperation. When this work was performed, the author was employed at the German Aerospace Center (DLR), Institute of Aerodynamics and Flow Technology, Göttingen


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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Institut für Strömungsmechanik der TU Braunschweig BraunschweigGermany

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