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http://dx.doi.org/10.3741/JKWRA.2016.49.11.941

Estimation of discharge coefficients of the broad-crested side weir with various levee's side slope of main channel  

Kang, Ho-Seon (National Disaster Management Research Institute)
Cho, Hong-Je (Dept., of Civil & Environmental Engrg., University of Ulsan)
Publication Information
Journal of Korea Water Resources Association / v.49, no.11, 2016 , pp. 941-949 More about this Journal
Abstract
The flow characteristics of the broad-crested side weir considering the levee's side slope of main channel ($ES_{ch}$) was investigated through hydraulic experiment in order to estimate the discharge coefficient equation. For applicability to actual river, levee's side slope of main channel 1:0.5, 1:1 and 1:2 were selected. Experimental results show that the new estimated equation for the discharge coefficient including $ES_{ch}$ is reasonable and effective in actual applications by comparing estimated and measured discharge over side weirs. Through a multiple linear regression analysis the importance of variabes were ordered as $ES_{ch}$ > $h/y_u$ > $L/y_u$ > $Fr_u$. Especially the discharge coefficient equation without $Fr_u$ was suggested, and the high applicability was reviewed by comparing the measured and calculated overflow of broad-chested side weir.
Keywords
Levee's side slope; Hydraulic experiment; Discharge coefficient; Broad-crested side weir;
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Times Cited By KSCI : 2  (Citation Analysis)
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