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Measurements in the thick axisymmetric turbulent boundary layer near the tail of a body of revolution

Published online by Cambridge University Press:  29 March 2006

V. C. Patel
Affiliation:
Institute of Hydraulic Research, University of Iowa, Iowa City, Iowa 52242
A. Nakayama
Affiliation:
Institute of Hydraulic Research, University of Iowa, Iowa City, Iowa 52242
R. Damian
Affiliation:
Institute of Hydraulic Research, University of Iowa, Iowa City, Iowa 52242

Abstract

Detailed measurements of pressure distributions, mean velocity profiles and Reynolds stresses were made in the thick axisymmetric turbulent boundary layer near the tail of a body of revolution. The results indicate a number of important differences between the behaviour of a thick and a thin boundary layer. The thick boundary layer is characterized by significant variations in static pressure across it and an abnormally low level of turbulence. The static-pressure variation is associated with a strong interaction between the boundary layer and the potential flow outside it, while the changes in the turbulence structure appear to be a consequence of the transverse surface curvature. In order to predict the behaviour of the flow in the tail region of a body of revolution it is not therefore possible to use conventional thin-boundary-layer calculation procedures.

Type
Research Article
Copyright
© 1974 Cambridge University Press

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