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Turbulent Boundary Layer Under the Influence of Adverse Pressure Gradient
Author(s) -
Drobniak S.,
Drozdz A.,
Elsner W.,
Materny M.
Publication year - 2009
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200910199
Subject(s) - adverse pressure gradient , boundary layer , turbulence , pressure gradient , mechanics , boundary layer thickness , flow separation , curvature , reynolds number , physics , materials science , geometry , mathematics
The paper deals with the experimental analysis of turbulent boundary layer at the flat plate for large value of Reynolds number equal Re θ ≈ 3000. The adverse pressure gradient generated by curvature of the upper wall corresponded to the case of pressure variation in axial compressor. The fully developed structure of turbulence was achieved by proper triggering of the boundary layer. The mean and turbulent flow‐fields were investigated with the use of hot‐wire technique while mean and instantaneous pressure fields were examined with piezoelectric transducers. The scaling and turbulence structure of fully developed turbulent boundary layer under the influence of adverse pressure gradient revealed the more pronounced contribution of outer region to the downstream development of turbulent boundary layer. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)