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Abstract
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Article Information:
Surface Roughness Effects on Discharge Coefficient of Broad Crested Weir
Shaker A. Jalil, Safa S. Ibrahim and Rondk A. Jafer
Corresponding Author: Shaker A. Jalil
Submitted: February 22, 2014
Accepted: April 14, 2014
Published: June 25, 2014 |
Abstract:
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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 ratio of roughness to the weir height (Ks/P) and with the increase of the total Head to the Length (H/L). An empirical equation was obtained to estimate the variation of discharge coefficient Cd in terms total head to length ratio, with total head to roughness ratio.
Key words: Broad crested weir, discharge coefficient, surface roughness, total head, , ,
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Cite this Reference:
Shaker A. Jalil, Safa S. Ibrahim and Rondk A. Jafer, . Surface Roughness Effects on Discharge Coefficient of Broad Crested Weir. Research Journal of Applied Sciences, Engineering and Technology, (24): 5227-5233.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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