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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 ,
A. Nakayama  and
R. Damian
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
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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
Information
Journal of Fluid Mechanics , Volume 63 , Issue 2 , 3 April 1974 , pp. 345 - 367
Copyright
© 1974 Cambridge University Press

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