Installing rough strip energy dissipators (R-SEDs) at the bottom of curved spillways can facilitate dissipation and flow stabilization. In this study, effects R-SEDs set a 60° bend in spillway were examined. This had large width-to-depth ratio ( B / H > 5 ). Based on physical model ...

Stepped spillways can be defined as human-made hydraulic structures constructed to monitor and control flow release attain high energy dissipation. Such are commonly used in embankment dams; however, it is important that a sufficient chute length provided develop the required aerated flow; point at which this occurs known inception point. This paper focusses on influence of non-uniform geometry...

ABSTRACT The possibility of damage due to the phenomenon cavitation leads design stepped spillways considering maximum specific discharges 15 30 m2/s, a limit considerably lower than that practiced on smooth chutes. Aerators promote insertion air in flow, allowing for increase flow rates. This work analyzes pressures vertical faces steps and entrainment coefficient through an experimental study...

Abstract Siphon-shaft spillways are constituted by covering above a shaft spillway with hood that creates siphonic pressure. This study focused on the aeration flow through aerator holes placed to prevent cavitational damage in high-head siphon-shaft spillways. Three-dimensional computational fluid dynamics (CFD) technique using finite-volume method solve Reynolds-averaged Navier–Stokes (RANS) ...