General Method for Critical Point on Spillways
Publication: Journal of Hydraulic Engineering
Volume 109, Issue 2
Abstract
Available information on boundary layer development beyond the crest of a spillway is reviewed. Self-aeration of the flow begins at a critical point where the boundary layer has thickened sufficiently to induce turbulence at the surface, and the calculation of this location is an important aspect of chute spillway design. A new formulation is derived that is believed to be applicable to non-standard profiles as well as to standard crest profiles leading to a chute of constant slope. This equation allows for surface roughness and the influence of flow acceleration.
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References
1.
Bauer, W. J., “Turbulent Boundary Layer on Steep Slopes,” Transactions, ASCE, Vol. 119, Paper No. 2719, 1954.
2.
Cain, P., and Wood, I. R., “Measurements of Self‐Aerated Flow on a Spillway,” Journal of the Hydraulics Division, ASCE, Vol. 107, No. HY11, Nov., 1981.
3.
Campbell, F. D., et al., “Boundary Layer Development and Spillway Energy Losses,” Journal of the Hydraulics Division, ASCE, Vol. 91, No. HY3, May, 1965.
4.
Halbronn, G., discussion of “Turbulent Boundary Layer on Steep Slopes,” by W. J. Bauer, Transactions, ASCE, Vol. 119, Paper No. 2719, 1954.
5.
Keller, R. J., and Rastogi, A. K., “Design Chart for Predicting Critical Point on Spillways,” Journal of the Hydraulics Division, ASCE, Vol. 103, No. HY12, Dec., 1977.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 109 • Issue 2 • February 1983
Pages: 308 - 312
Copyright
Copyright © 1983 ASCE.
History
Published online: Feb 1, 1983
Published in print: Feb 1983
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