Numerical Investigation of the Flow Characteristics in the vicinity of Pressure Conduit’s Gates

Bottom outlet is one of the related hydraulic structures of dams which is used to control initial water volume inreservoir and to help the spillways discharge capacity in floodwaters. Designed elements of bottom outlet suchas control gates must be able to correctly act to regulate downstream flow in entirely closed and semi-opensituation. Bottom outlets which work with high heads, may create intense change in velocity and pressure fieldnear the control systems (gates) by high velocity that possibility cause to occur cavitation phenomenon andunusual vibration on the structure’s wall and conduit. In this research, characteristics of the flow, such asmomentary and average flow's pressure and velocity near the service gate, cavitation index and gate vibrationfrequency in reservoir normal head (100 m) at the various service gate openings were extracted and analyzed byusing numerical model of Seymareh dam’s bottom outlet with FLOW 3D software and RNG(K-ε) turbulencemodel. The results of this research will help to understand appropriately the hydraulic phenomena occurredaround the outlet gates

(PDF) Numerical Investigation of the Flow Characteristics in the vicinity of Pressure Conduit’s Gates. Available from: https://www.researchgate.net/publication/348818115_Numerical_Investigation_of_the_Flow_Characteristics_in_the_vicinity_of_Pressure_Conduit's_Gates [accessed Apr 01 2025].