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Measurements near a laminar separation point

Published online by Cambridge University Press:  20 April 2006

R. L. Varty  and
I. G. Currie
R. L. Varty
Affiliation:
Department of Mechanical Engineering, University of Toronto, Ontario
I. G. Currie
Affiliation:
Department of Mechanical Engineering, University of Toronto, Ontario
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Abstract

Measurements in the neighbourhood of a laminar separation point at a high subcritical Reynolds number are reported. These results are used to test the validity of various theories relating to laminar separation. It is concluded that the boundary-layer equations are valid in the neighbourhood of the separation point without the existence of a singularity.

The velocity field was measured using a dual-beam laser-Doppler anemometer with optical frequency shifting. The wall-shear-stress distribution was measured with a flush-mounted hot-film sensor and the wall-pressure distribution was measured using a strain-gauge pressure sensor. The various terms in the Navier–Stokes equations were evaluated directly from the measurements, permitting the validity of the boundary-layer equations to be established. Proposed solutions for the flow field are compared with the measured flow field.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 138 , January 1984 , pp. 1 - 19
Copyright
© 1984 Cambridge University Press

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