Results 21 to 30 of about 266 (220)
Applied Sciences, 2022 In this study, curved risers stepped spillways models based on the increasing angle of suspension were tested to check for improvement in energy dissipation and pressure distributions.
Najam us Saqib +6 more
doaj +1 more source
The inception point of flow aeration on a rough stepped spillway [PDF]
هیدرولیک, 2023 Stepped spillways are used in hydraulic engineering projects such as small and large dams. The inception point of aeration on such hydraulic structures is essential in determining the zones of single and two-phase flow.
عباس پارسائی +2 more
doaj +1 more source
RBRH, 2021 The operation of stepped spillways is limited by a range of discharges due to the risk of occurrence of the cavitation phenomenon and erosion on its steps.
Priscila dos Santos Priebe +6 more
doaj +1 more source
Effect Of Pooled and Flat Stepped Spillway on Energy Dissipation Using Computational Fluid Dynamics
Tikrit Journal of Engineering Sciences, 2022 The goal of this research was to determine the impact of a pooled and flat stepped spillway on energy losses. FLOW3D, which is a computational fluid dynamics (CFD) program, with mesh size of 0.015 mm was used for this purpose. First, the code was tested
Shawnm Mudhafar Saleh +2 more
doaj +1 more source
Prediction of air concentration in stepped spillways using data-oriented methods [PDF]
محیط زیست و مهندسی آبThe high flow velocity and the pressure reduction in the spillways cause damage to the spillways. In the present research, the application of Gaussian Process Regression (GPR) and Support Vector Machine (SVM) was investigated for predicting air ...
Kiyoumars Roushangar +3 more
doaj +1 more source
Stepped spillway with pre-aeration by a deflector: flow characteristics
RBRH, 2020 Stepped spillways aim to dissipate part of the upstream energy during the flow passage by the chute. However, the use of these structures is limited to a restrict range of specific discharges due to the risk of cavitation damage.
Carolina Kuhn Novakoski +5 more
doaj +1 more source
Stepped spillway flows and air entrainment [PDF]
Canadian Journal of Civil Engineering, 1993 Stepped spillways have become a popular method for handling flood releases. The steps significantly increase the rate of energy dissipation taking place on the spillway face and reduce the size of the required downstream energy dissipation basin. The compatibility of stepped spillways with roller compacted concrete and gabion construction techniques ...
openaire +4 more sources
Effect of Height and Geometry of Stepped Spillway on Inception Point Location
Applied Sciences, 2019 Air entrainment in a stepped spillway is very important to protect the spillway from cavitation damage. The inception point is the location where air starts entering the non-aerated flow zone. The inception point location depends on different parameters,
Wuyi Wan, Awais Raza, Xiaoyi Chen
doaj +1 more source
Stepped Spillway as an Energy Dissipater [PDF]
Canadian Water Resources Journal / Revue canadienne des ressources hydriques, 2004 This paper describes an experimental investigation into the hydraulics of ogee-profile stepped spillways, examines their viability as an alternative to smooth-back spillways and investigates their efficiency in reducing the downstream energy and length of the hydraulic jump.
Chatila, Jean G., Jurdi, Bassam R.
openaire +2 more sources
RBRH, 2018 Stepped spillways have been widely used for flood runoff due to of their constructive advantages and in regards to energy dissipation during the drop, allowing downstream dissipation structures to be designed in smaller dimensions.
Fabrício Machado Osmar +5 more
doaj +1 more source