NUMERICAL SIMULATION OF FLOW THROUGH VERTICAL GATES WITH DIFFERENT LIP SHAPES

Abstract

Sluice gate is important component of hydraulic structure, widely used for flow metering and control in open channel flow. The present work has been concerned of validation and numerical analysis using Reynolds averaging Navier-stokes and continuity equation of an experimental investigation with the broad objectives of observing the discharge and contraction coefficient, velocity profile, pressure characteristics of fluid flow around vertical gate lip shape at gate bottom. Numerical model comprises two-dimensional, multiphase, open channel CFD simulation with turbulence realizable k—e model for fluid and mass transport for different gate opening and range of Reynolds number. Gambit pre-processor is used for geometry and mesh creation in solution domain. The control volume method is adopted for solving the governing equations with the turbulence k—e model. The VoF method is considered to track the free surface flow with fraction of their volume. In this study, all parameter are investigated in terms of ratio of gate opening to approaching flow depth foe gate lip shape and their effect on flow properties mentioned earlier