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Modified Proportional V-Notch Weirs

Murthy, Keshava K and Pillai, Gopalakrishna K (1978) Modified Proportional V-Notch Weirs. In: Journal of the Hydraulics Division, 104 (5). pp. 775-791.

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Official URL: http://cedb.asce.org/cgi/WWWdisplay.cgi?5013781


Seven different shaped modified proportional V-notches were designed and pertinent data for their use are given in tables 1 - 4. It is shown that the indication accuracies of these weirs are more than that of the conventional V-notch. For five of the designed weirs the indication accuracies are more than that of the conventional rectangular weir at lower heads of flow. All these proportional weirs, except the parabolic based weir, have added advantages over the V-notch in regard to fixing and finding the crest level. Experiments with five weirs (four symmetrical and one unsymmetrical) having rectangular bases and one (symmetrical) with a parabolic base show very good agreement with the theory and give consistent values for the coefficient of discharge, Cd, varying between 0.588 and 0.605, within the ranges of the experiments.

Item Type: Journal Article
Publication: Journal of the Hydraulics Division
Publisher: Asce-Amer Soc Civil Engineers
Additional Information: Copyright of this article belongs to Asce-Amer Soc Civil Engineers
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 11 Dec 2009 11:16
Last Modified: 11 Dec 2009 11:16
URI: http://eprints.iisc.ac.in/id/eprint/24934

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