Smooth and Stepped Converging Spillway Modeling Using the SPH Method

Three-dimensional (3D) simulations using the smoothed particle hydrodynamics (SPH) method were performed for smooth and stepped spillways with converging walls, in order to evaluate influence of wall deflection step macro-roughness on main non-aerated flow properties. The encompassed a 1V:2H sloping spillway, convergence angles 9.9° 19.3°, discharges corresponding skimming regime, chute. overall development experimental data depths, velocity profiles, standing wave widths was generally well predicted by numerical simulations. However, larger deviations depths velocities observed close upstream end chute pseudo-bottom invert, respectively. results showed that height width waves significantly influenced angle increasing deflection, attenuated vorticity fields, along 3D recirculating vortices line recent findings constant chutes.