Influence of Sill on the Hydraulic Regime in Sluice Gates: An Experimental and Numerical Analysis

This study investigates experimentally and numerically the effects of sills with different geometric specifications at various positions on hydraulic characteristics flow through sluice gates. The simulation results showed that RNG turbulence model’s statistical indicators yield high accuracy compared to k-?, k-?, LES models. discharge coefficient (Cd) has an inverse relationship gate opening. Regarding sill state, is higher than no-sill state. In case non-suppressed sills, Cd decreases smaller openings as opening changes. a in tangent position upstream downstream below situations. Increasing length leads increase shear stress consequently decrease Cd. gates thicknesses always but due constant ratio fluid depth above opening, increases certain extent then increasing thickness.