Direct Solutions for Uniform Flow Parameters of Wide Rectangular and Triangular Sections
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 147, Issue 7
Abstract
One of the general problems encountered in the design of open channels is the computation of normal depth, head loss, and discharge. A wide rectangular section is commonly used in natural streams and surface/sheet flow in watersheds and the triangular section is commonly used for irrigation and roadside channels. The normal depth or head loss is traditionally solved using a trial (iterative) procedure. This paper develops two direct solutions for the head loss and normal depth for the wide rectangular and triangular open channel sections. The explicit equations for the normal depths are developed in terms of fast converging power series. The maximum errors of the proposed explicit formulas are 0.65% and 2% for triangular and wide rectangular channels, respectively, compared with 5% and 8% for the existing methods.
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Data Availability Statement
No data, model, or code were generated or used during the study.
Acknowledgments
The support provided by the General Directorate for Scientific Research and Technological Development, Algeria, is acknowledged.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 147 • Issue 7 • July 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jun 29, 2020
Accepted: Feb 24, 2021
Published online: May 14, 2021
Published in print: Jul 1, 2021
Discussion open until: Oct 14, 2021
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