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On turbulent boundary-layer separation

Published online by Cambridge University Press:  28 March 2006

V. A. Sandborn  and
C. Y. Liu
V. A. Sandborn
Affiliation:
Colorado State University, Fort Collins, Colorado
C. Y. Liu
Affiliation:
National Taiwan University, Taipei, Taiwan
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Abstract

An experimental and analytical study of the separation of a turbulent boundary layer is reported. The turbulent boundary-layer separation model proposed by Sandborn & Kline (1961) is demonstrated to predict the experimental results. Two distinct turbulent separation regions, an intermittent and a steady separation, with correspondingly different velocity distributions are confirmed. The true zero wall shear stress turbulent separation point is determined by electronic means. The associated mean velocity profile is shown to belong to the same family of profiles as found for laminar separation. The velocity distribution at the point of reattachment of a turbulent boundary layer behind a step is also shown to belong to the laminar separation family.

Prediction of the location of steady turbulent boundary-layer separation is made using the technique employed by Stratford (1959) for intermittent separation.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 32 , Issue 2 , 3 May 1968 , pp. 293 - 304
Copyright
© 1968 Cambridge University Press

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