Comparison of Experimental Study and Cfd Analysis of the Flow under a Sluice Gate

Flow in the open channels has great importance in the hydraulic engineering. Any disturbances as contractions and expansions affect the flow characteristics like velocities, flow rates and water surface profiles. Their effects on the flow must be considered during the design process of flow structures. In the last decades numerical solutions become popular as experimental studies take time, may be not economical and have scale effect. Computational Fluid Dynamics (CFD) is a type of numerical modeling and helps us to solve problems involving fluid flow. In this study, some physical experiments were set in the laboratory to obtain data required for flow along the sluice gate and conjugate depths of hydraulic jump of flow after sluice gate. FLOW-3D, which uses VOF (Volume Of Fluid) method and solve RANS (Reynolds Averaged Navier-Stokes) equations, is used for numerical modeling in order to verify experimental results. All measurements were compared with FLOW 3D in order to verify the ability of the CFD modeling. FLOW 3D and experimental results showed 95% consistency with each other. Keywords—Flow-3D, numerical modeling, open channels, sluice gate.