Expert System for Determining Discharge Coefficients for Inclined Slide Gates Using Genetic Programming
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 146, Issue 12
Abstract
Slide gates are commonly used to adjust flow in open canals. The discharge coefficient () for a slide gate is a function of the gate’s geometric and hydraulic characteristics. For free flow conditions, depends on the upstream water level and the opening of the gate, whereas for submerged flow, it also depends on the downstream water level. The main aim of this study is to conduct a series of laboratory experiments to determine for inclined slide gates. These tests and models were used to evaluate both free and submerged flows. Experiments with inclination angles of 0°, 15°, 30°, and 45° were studied with different gate openings. The collected data are used to develop equations for predicting . The results show that the inclination of the slide gates has a progressive effect on and increases capacity under the gate. The increase in relates to the convergence of the flow through the gate opening. The produced equation via genetic programming with and a relative error of 0.9431 and 0.0014 had optimal efficiency compared with classical multiple regression models. A comparison with other studies for inclination angles of 45° and 60° was also conducted.
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Data Availability Statement
Some or all of the data, models, or code that support the findings of this study are available from the corresponding author on reasonable request.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 146 • Issue 12 • December 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Apr 17, 2020
Accepted: Aug 10, 2020
Published online: Oct 8, 2020
Published in print: Dec 1, 2020
Discussion open until: Mar 8, 2021
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