The Effect of Dual Water Jet on Discharge Coefficient of Vertical Spillway
Al-Rafidain Engineering Journal (AREJ),
2021, Volume 26, Issue 2, Pages 291-299
10.33899/rengj.2021.130443.1104
Abstract
The water intakes is one of the important hydraulic installations that is built with the dam and is used to control the water level in the dam's lake. The vertical spillway is a type of intakes used in dams to control floods and as on intakes to change the river stream in mountainous areas. One of the most important problems that occur at vertical intakes is the vortex of water which occurs when the depth of submerge is less than the critical depth, dual water jet applied to the vertical spillway was used with different vertical and horizontal distances, the effect of dual water spillway was tested on six discharges entering the vertical spillway and the three diameters. The results shown that the dual water jet has a clear effect in dissipating the energy of the vortices formed at the vertical spillway, especially in the case of orifice flow, and it is effective in the large diameters of the vertical spillway.
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