Discharge Coefficient of a Trapezoidal Broad-Crested Side Weir for Low Approach Froude Numbers
Publication: Journal of Hydraulic Engineering
Volume 140, Issue 8
Abstract
Even though broad-crested side weirs have been subjected to numerous studies, guidance for discharge coefficient determination for broad-crested side weirs still has not been clearly given. Experimental research was carried out to describe the flow conditions in front of a trapezoidal broad-crested side weir at low Froude numbers in the approach channel for various combinations of inflow and overflow discharges. Three side weir variants with different oblique angles were studied. Flow characteristics at the side weir were analyzed and assessed based on the results obtained from extensive measurements performed on a hydraulic model. The empirical relation between the coefficient of obliqueness, the angle of side weir obliqueness, and Froude numbers upstream and downstream of the weir was derived.
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Acknowledgments
This study was supported by the Ministry of Industry and Trade under the project New Progressive Rehabilitation Technologies of Dikes and Embankment Dams, project code FR-TI4/335.
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© 2014 American Society of Civil Engineers.
History
Received: Mar 13, 2013
Accepted: Feb 12, 2014
Published ahead of print: Apr 1, 2014
Published online: Apr 2, 2014
Published in print: Aug 1, 2014
Discussion open until: Sep 2, 2014
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