Research Article
Jan 1973
Estimating Discharge from Superelevation in Bends
Publication: Journal of the Hydraulics Division
Volume 99, Issue 1
Abstract
A method is presented for estimating open channel discharge from the maximum superelevation measured in the bends. It was based on data assembled from a dozen sources, representing about 70 separate experiments in the subcritical flow regime, and including information on channels of different cross-sectional shapes, included angles, and curvature ratios. The resulting predictive equation includes the effects of curvature ratio, included angle, and superelevation on discharge. The method was applied to a single flow event on Buffalo Creek, N.Y. It was found that only curves in which the flow remained in-bank could be used to predict discharge and that superelevations of less than 0.25 ft (7.6 cm) had to be excluded. The probable error of the Buffalo Creek analysis was 8% with respect to the mean of the discharges predicted from individual curves, while the data upon which the method was based had a probable error of 12%.
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Published In
Journal of the Hydraulics Division
Volume 99 • Issue 1 • January 1973
Pages: 65 - 79
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Jan 1973
Published online: Feb 3, 2021
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Authors
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Robert P. Apmann, M.ASCE
Assoc. Prof, of Engrg. and Applied Sci., State University of New York at Buffalo, Buffalo, N.Y.; formerly Res. Hydr. Engr., Northeast Br., Soil and Water Conservation Research Div., Agr. Res. Service, U.S. Dept, of Agr
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.