Results 21 to 30 of about 47,584 (240)
Study of Conveniency of Using Stepped Spillway in Roller Compacted Concrete Dams (RCCD) [PDF]
Engineering and Technology Journal, 2009 A suggested design of Bastora stepped spillway has been taken as a prototype to build a physical wooden model with scale of 1:20 (Lm/Lp). Experiments have been carried out on the model with slope of upward inclined steps of 420, 280, 140 and 00.
Karim K. EL- Jumaily +1 more
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CFD Modelling of a Stepped Spillway with Various Step Layouts [PDF]
Mathematical Problems in Engineering, 2019 A traditional stepped spillway is prone to cavitation risks. To improve its hydraulic behaviors, distorted step faces and pool weirs are devised. By numerical modelling, comparative studies are conducted to look into the flow features. The pressures on step surfaces of the unconventional layouts exhibit 3D distributions.
Shicheng Li, Qiulin Li, James Yang
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Aeration characteristics for skimming flow along the pre-aerator stepped spillways
Shui kexue jinzhan, 2014 Pre-aerator stepped spillways,where the aerator is placed prior to the primary step in the stepped spillway,can form a cavity chamber at the bottom to produce enough aeration concentration to avoid the cavitation erosion.
LIU Shanjun +5 more
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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
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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
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Water Science and Engineering, 2019 Over recent years, there has been a clear increase in the frequency of reported flooding events around the world. Gabion structures offer one means of flood mitigation in dam spillways.
Dominic E. Reeve +2 more
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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
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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
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Stilling Basin Performance Downstream of Stepped Spillways [PDF]
, 2020 Advances in dam construction techniques have significantly increased the number of implemented stepped spillways worldwide. A key hydraulic feature of a stepped chute, compared to a smooth chute, is the enhanced energy dissipation resulting in a reduced ...
Stojnic, Ivan
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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
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