Efficiency of trapezoidal labyrinth shaped stepped spillways

A Ghaderi, S Abbasi, J Abraham… - Flow measurement and …, 2020 - Elsevier
A spillway with Trapezoidal Labyrinth Shaped steps (TLS) is proposed and investigated
numerically. The results show that this spillway has better performance as it increases the …

Numerical study on the hydraulic properties of flow over different pooled stepped spillways

A Ghaderi, S Abbasi, S Di Francesco - Water, 2021 - mdpi.com
This work presents numerical simulations carried out to study the influence of geometric
characteristics of pooled steps on the energy dissipation performance, flow patterns …

Hydraulic characteristics of flow over stepped and chute spillways (case study: Zirdan Dam)

F Salmasi, J Abraham - Water Supply, 2023 - iwaponline.com
Stepped spillways are suitable and economical options for high-storage dams that require
significant energy dissipation, structural adaptation to roller-compacted concrete dams, and …

Stepped spillways and energy dissipation: A non-uniform step length approach

A Ashoor, A Riazi - Applied Sciences, 2019 - mdpi.com
A stepped spillway, which is defined as a spillway with steps on the chute, can be used to
improve the energy dissipation of descending water. Although uniform stepped spillways …

Experimental study of the degasification efficiency of supersaturated dissolved oxygen on stepped cascades and correlation prediction model

X Cheng, J Lu, R Li, J Feng, M Ye, Y Mao… - Journal of Cleaner …, 2021 - Elsevier
Spills of dams often lead to dissolved gases supersaturation of water downstream. Owing to
the slow dissipation, the impact of supersaturated dissolved gases in cascade hydropower …

Investigations of velocity and pressure fluctuations over a stepped spillway with new step configuration

UA Jahad, R Al-Ameri, S Das - Water Supply, 2022 - iwaponline.com
The effect of the end sill shape of steps for two-phase flow over stepped spillways was
investigated. A quantitative assessment approach has been applied. Experimental and …

Numerical investigation of alternating skimming flow over a stepped spillway

A Kaouachi, RF Carvalho, P Lopes, S Benmamar… - Water …, 2021 - iwaponline.com
This study aims to illustrate the influence of stepped spillway width on alternating skimming
flow development. A computational fluid dynamics (CFD) model in Ansys Fluent® was …

Inception point of flow aeration on quarter-circular crested stepped spillway

A Parsaie, AH Haghiabi - Flow Measurement and Instrumentation, 2019 - Elsevier
The aim of this study was to investigate the location of inception point of flow aeration
(LIPFA) on quarter-circular crested stepped spillway (QCSS). The QCSS is a typical stepped …

Stepped spillway slope effect on air entrainment and inception point location

A Raza, W Wan, K Mehmood - Water, 2021 - mdpi.com
Spillway is a crucial hydraulic structure used to discharge excess water from the dam
reservoir. Air entrainment is essential to prevent cavitation damage on the spillway …

Study on the hydraulic characteristics of the trapezoidal energy dissipation baffle block-step combination energy dissipator

Y Tian, Y Li, X Sun - Water, 2022 - mdpi.com
The step-type energy dissipator is widely used to construct small-and medium-sized
reservoirs with its high energy dissipation rate. In order to further improve its air entrainment …