Discharge Relation for Cutthroat Flume under Free-Flow Condition
Publication: Journal of Irrigation and Drainage Engineering
Volume 133, Issue 5
Abstract
A cutthroat flume is commonly used as flow measuring device for open-channel flow due to ease of fabrication and installation. In most of the cases it is difficult to calibrate the flume in the field. Therefore, accurate relation between discharge and upstream head applicable for all sizes of cutthroat flume is needed. Seven different sizes of cutthroat flumes, having different length to throat width ratios, are fabricated and tested in the laboratory under free-flow condition. Selecting groups of different variables describing flow through a cutthroat flume number of dimensionless parameters are formed. Regression analysis of experimental data is carried out between all possible combinations of pairs of dimensionless parameters and the pair giving the best correlation is selected. Using the selected pair, relation between dimensionless parameters of discharge and head is developed. The relation is simple and convenient to use and, at the same time, more accurate compared to methods available in literature for prediction of discharge.
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References
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 133 • Issue 5 • October 2007
Pages: 495 - 499
Copyright
© 2007 ASCE.
History
Received: Jul 6, 2006
Accepted: May 15, 2007
Published online: Oct 1, 2007
Published in print: Oct 2007
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