Subject Area
Civil and Environmental Engineering
Article Type
Original Study
Abstract
The hydraulic structures play a very important role in controlling the channel discharge and the water levels, but the presence of the hydraulic structures in channels infested by aquatic weeds may cause significant problems for the performance of these structures. In Egypt more than 80% of the canals and the drains are heavily infested by all types of aquatic weeds. This infestation has started shortly after the construction of the High Aswan Dam. The most prevailing type of aquatic weeds is the submerged weeds. This type of weeds decreases the channels hydraulic efficiency as the low resistance increases. In the present study, the effect of submerged weeds density on the performance of vertical sluice gates was analyzed experimentally. The dimensional analysis was employed to derive an expression for the discharge coefficient and an equation for predicting the energy losses on the gates are developed. The experimental modeling was developed for a double vent regulator model with vertical sluice gates constructed in a trapezoidal flume and the branched flexible roughness were used to simulate the submerged weeds. The extensive laboratory measurements concentrated mainly on the discharge coefficient, the energy losses, the variation in the water surface profile, the velocity distribution and the variation in the equivalent roughness coefficient.
Keywords
Experimental modeling; Dimensional analysis; Vertical sluice gales; Submerged weeds; Branched flexible roughness; Discharge coefficient. Energy loss
Recommended Citation
El-Samman, Tarek; Zeydan, Bakenaz; and Gado, Tamer
(2021)
"Performance of Control Structures in Channels Infested by Aquatic Weeds in Egypt.,"
Mansoura Engineering Journal: Vol. 28
:
Iss.
2
, Article 2.
Available at:
https://doi.org/10.21608/bfemu.2021.141128
