Energy dissipation downstream multi opening sluice gate

Sluice gates are structures, which are used to regulate the water level in open channels. Many studies examined the hydraulic properties of these gates to reach the best performance, but studies that dealt with multi-opening sluice gates are still few and need more investigations, this study focuses on gate operating scenarios and the effect on energy dissipation. The energy dissipation equation for a multi-opening sluice gate is predicted and compared with actual data, with maximum error not exceed 15%. The results showed that the maximum ΔE/E1 values reached 70.18% for the same gate openings, and this value reached 68.46% when the summation of intermediate openings is greater than that for side operating. These values decrease to 44.1% in the opposite operation, so this operating system must be avoided.