Research Article
Mar 1981
Required Head Loss over Long-Throated Flumes
Authors: Marinus G. Bos and Yvonne ReininkAuthor Affiliations
Publication: Journal of the Irrigation and Drainage Division
Volume 107, Issue 1
Abstract
Long-throated flumes, all with the same trapezoidal throat, were laboratory tested. The flume throat was first fitted with two entrance transitions with plane bottoms converged respectively 1:2, and 1:3, as measured relative to the flume center line. The 1:2 transition has no significant influence on the flume calibration. The throat was then tested with six downstream transitions of which the expansion ratio ranged from 1:0—1:10. Two flume series were tested with these transitions. The modular limits and related required energy head losses were analyzed. An equation is presented to estimate the modular limit for any long-throated flume placed in an arbitrary canal; a procedure to calculate this modular limit is also presented.
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Published In
Journal of the Irrigation and Drainage Division
Volume 107 • Issue 1 • March 1981
Pages: 87 - 102
Copyright
© 1981 American Society of Civil Engineers.
History
Published in print: Mar 1981
Published online: Feb 11, 2021
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Authors
Affiliations
Marinus G. Bos
Civ. Engr., Irrigation and Water Management, International Inst. for Land Reclamation (ILRI), Wageningen, The Netherlands
Yvonne Reinink
Formerly Research Asst., International Inst. for Land Reclamation and Improvement, Wageningen, The Netherlands
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