2014
DOI: 10.19026/rjaset.7.918
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Surface Roughness Effects on Discharge Coefficient of Broad Crested Weir

Abstract: The aim of this study is to investigate the effects of surface roughness sizes on the discharge coefficient for a broad crested weirs. For this purpose, three models having different lengths of broad crested weirs were tested in a horizontal flume. In each model, the surface was roughed four times. Experimental results of all models showed that the logical negative effect of roughness increased on the discharge (Q) for different values of length. The performance of broad crested weir improved with decrease rat… Show more

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Cited by 10 publications
(6 citation statements)
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“…Investigation on the effects of surface roughness sizes on the discharge coefficient for broad-crested weirs was carried out by [12]. Results showed that the logical negative effect of roughness increased with discharge for different lengths of the weir.…”
Section: Broad-crested Weirsmentioning
confidence: 99%
“…Investigation on the effects of surface roughness sizes on the discharge coefficient for broad-crested weirs was carried out by [12]. Results showed that the logical negative effect of roughness increased with discharge for different lengths of the weir.…”
Section: Broad-crested Weirsmentioning
confidence: 99%
“…Weirs and gates are the most commonly used and important structures for measuring water flow, regulating flow in irrigation channels, and redirecting it from the main channel to secondary channels [1]. Weirs are structures that regulate water surface and flow control in water conveyance channels and hydraulic structures.…”
Section: Introductionmentioning
confidence: 99%
“…The output of this study clarified flow patterns and governing relationships in the hydraulics of rectangular broad weirs. Jalil et al (2014) experimentally derived an empirical formula for the prediction of broad-crested weir discharge coefficients. The results showed that the performance of the broad crested weir is inversely proportional to the ratio of roughness to the weir height and the increase of the total head to the length.…”
Section: Introductionmentioning
confidence: 99%