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Steady shallow flow over curved beds

Published online by Cambridge University Press:  20 April 2006

N. S. Sivakumaran ,
T. Tingsanchali  and
R. J. Hosking
N. S. Sivakumaran
Affiliation:
Asian Institute of Technology, Bangkok, Thailand
T. Tingsanchali
Affiliation:
Asian Institute of Technology, Bangkok, Thailand
R. J. Hosking
Affiliation:
Asian Institute of Technology, Bangkok, Thailand Permanent address: University of Waikato, Hamilton, New Zealand.
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Abstract

The validity of recent shallow-flow equations with bed curvature is examined. Subcritical, critical and supercritical steady-flow solutions are identified, and the point of critical flow on the bed located, in terms of a generalized Froude number. Experiments on steady flow over both a symmetric and unsymmetric bed profile show that the theory satisfactorily predicts the free-surface and bed-pressure profiles over −2 [lsim ] kh 0·54 (where k is the bed curvature and h is the flow depth normal to the bed).

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 128 , March 1983 , pp. 469 - 487
Copyright
© 1983 Cambridge University Press

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