Research Article
Oct 1976
Flow at Grade-Break from Mild to Steep Slopes
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 102, Issue 10
Abstract
An empirical equation was determined using dimensional analysis and experimental test data to determine the depth of flow at a grade-break in a rectangular channel where the slope changes from mild to steep. The ratio of the depth of flow at the grade-break to the critical depth of flow was found to depend largely upon the slope of the downstream reach. The ratio reached a minimum of 0.715 when the downstream slope was steep enough to produce clear separation of the flow with an aerated nappe. The upper limit of 1.0 was approached as the downstream slope approached critical.
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Published In
Journal of the Hydraulics Division
Volume 102 • Issue 10 • October 1976
Pages: 1439 - 1448
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Oct 1976
Published online: Feb 3, 2021
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Authors
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Richard G. Weyermuller, AM.ASCE
Civ. Engrg. Assoc., Dept. of Water and Power, City of Los Angeles, Calif.
M. Gamal Mostafa, M.ASCE
Prof., Dept. of Civ. Engrg., California State Univ. at Long Beach, Long Beach, Calif.
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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.