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Effect of rounded-edge entrance on discharge coefficient of side weir in rectangular channels

✍ Scribed by Tooraj Honar; Alireza Keshavarzi

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
326 KB
Volume
58
Category
Article
ISSN
1531-0353

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✦ Synopsis

Abstract

Side weirs are flow diversion devices that are widely used in irrigation and drainage networks and urban sewage systems. They are usually built with a squared‐edge entrance. The present study focuses on the effect of rounded‐edge entrance shape on the discharge coefficient of a side weir under subcritical flow condition in rectangular channels. In this study, 90 laboratory tests were conducted and the results were analyzed to find the influence of non‐dimensional hydraulic parameters on the discharge coefficient. From the results, it was found that under subcritical flow condition the side weir with rounded‐edge entrance discharges 10% more flow rate than the squared edge entrance. As a result, for equal flow rate, the rounded‐edge entrance side weir with small dimensions can be designed for use in practical applications. Copyright © 2008 John Wiley & Sons, Ltd.

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