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Calculation of Contraction Coefficient under Sluice Gates and Application to Discharge Measurement

Belaud, Gilles and Cassan, Ludovic and Baume, Jean-Pierre Calculation of Contraction Coefficient under Sluice Gates and Application to Discharge Measurement. (2009) Journal of Hydraulic Engineering, 135 (12). 1086-1091. ISSN 0733-9429

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Official URL: http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000122

Abstract

The contraction coefficient under sluice gates on flat beds is studied for both free flow and submerged conditions based on the principle of momentum conservation, relying on an analytical determination of the pressure force exerted on the upstream face of the gate together with the energy equation. The contraction coefficient varies with the relative gate opening and the relative submergence, especially at large gate openings. The contraction coefficient may be similar in submerged flow and free flow at small openings but not at large openings, as shown by some experimental results. An application to discharge measurement is also presented.

Item Type:Article
Additional Information:Thanks to American Society of Civil Engineers editor. The definitive version is available http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000122
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Institut national de recherche en sciences et technologies pour l’environnement et l’agriculture - CEMAGREF (FRANCE)
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Deposited On:26 Jun 2013 09:39

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