HYDRAULIC DESIGN OF A MULTI-LEVEL INTAKE STRUCTURE
In the present work design of a multi level intake is explained for a 65m high rock fill dam. This multi-level intake structure was designed for irrigation purposes with a design discharge of 20 m3/s. This structure, standing vertically in the reservoir, was 65m high and had a rectangular cross section which its dimensions were different at different elevations. Four intakes were considered in different elevations in this structure. All intakes were located at one side of the intake structure,each controlled by an independent slide gate. To be able to operate these gates in 4 different gate slots,each intake was recessed in comparison with the intake located at the lower elevation. A separate slot was also used for the trash rack. As a part of the design process, a 1:20 scale model was constructed. This hydraulic model study was conducted to collect hydraulic design data for the proposed intake structure and to ensure satisfactory hydraulic performance. The scale model was tested to determine head losses, discharge capacity and the potential vortex formation which could affect the performance of the structure and mechanical equipment. The hydraulic model showed that flow condition along the tower and at intakes is satisfactory. No separation at transitions and especially at 900 curvature of the flow from the intakes to the tower structure was observed. In addition pressures measured at different points were in acceptable range. A minimum water level was also found for each intake through experiment at which vortex did not form in the reservoir.
multi-level intake hydraulic design scale model
K.Safavi A.R.Karaminejad H.Jamali H.A Sarkardeh A.R.Zarrati
Senior Research Engineer, Water Research Institute, Tehran, Iran Bandab Consulting Engineers, Tehran, Iran Post Graduate Student of Amirkabir University of Technology, Tehran, Iran Amirkabir University of Technology, Tehran, Iran
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
2064-2068
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）