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Laboratory Study For Estimating The Removing Sediment From Upstream Weirs Using Bottom Outlets | ||
| Al-Rafidain Engineering Journal (AREJ) | ||
| Article 1, Volume 23, Issue 1, 2015, Pages 62-72 PDF (0 K) | ||
| DOI: 10.33899/rengj.2015.101028 | ||
| Authors | ||
| Moayad S. Khaleel; Akram Kh. Mohammed | ||
| Abstract | ||
| In this research, a series of laboratory experiments were carried out to estimate the removing sediment amount from upstream weirs using bottom outlets. The experiments were conducted in a laboratory channel (24.6 m) in length and (0.81 m) wide, in middle of which a weir was fixed. Six discharges were allowed to flow with, three different sediment concentration for each. The results showed that there is a direct relation between the area of the holes, Froude number and the amount of sediment removed, the depth of aggradation near weir location decreases with increasing the number of holes. A dimensionless equation was created to compute the amount of sediment removed in terms of area of the holes with a coefficient of determination (0.895) and the percentage of the highest and lowest difference between the measured and calculated sediment amount were (15.7, 0.2), respectively. | ||
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