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http://dx.doi.org/10.3741/JKWRA.2015.48.7.523

The Effectiveness of Overflow Improvement of Broad-Crested Side Weirs according to Installing a Hydraulic Structure  

Kang, Ho Seon (Dept. of Civil & Engineering., Ulsan University)
Cho, Hong Je (Dept. of Civil & Engineering., Ulsan University)
Publication Information
Journal of Korea Water Resources Association / v.48, no.7, 2015 , pp. 523-533 More about this Journal
Abstract
In this study, the effectiveness of overflow improvement of weir was tested by conducting hydraulic experiments at the designated spot for installment of side weir under the condition of installment of hydraulic structures such as small reservoir in mainstream. The height of the reservoir was set up as a third of that of the weir, accordingly the rate of the height of the weir and the distance of the reservoir from the weir($B_h/L_b$) were 0.05, 0.025, 0.0167 each. As a result, overflows per unit width increased by 8.1%, 5.4% and 3.9% perspectively. A new discharge coefficient that adds $B_h/L_b$ as parameter to the existing discharge coefficient of trapezoidal broad crested side weir was suggested and the application of the new formula of discharge coefficient by comparing measured overflow with calculated overflow was identified.
Keywords
Trapezoidal broad crested side weir; The rate of the height of the weir and the distance ($B_h/L_b$); Discharge coefficient; Overflow;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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