Re-Aeration on Stepped Spillways with Special Consideration of Entrained and Entrapped Air [PDF]
Geosciences (Switzerland), 2018 As with most high-velocity free-surface flows, stepped spillway flows become self-aerated when the drop height exceeds a critical value. Due to the step-induced macro-roughness, the flow field becomes more turbulent than on a similar smooth-invert chute.
Daniel B Bung +2 more
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Analysis of Energy Dissipation of Interval-Pooled Stepped Spillways [PDF]
Entropy, 2022 The water flow characteristics over an interval-pooled stepped spillway are investigated by combining the renormalization group (RNG) k-ε turbulence model with the volume of fluid (VOF) interface capture technique in the present study.
Xin Ma, Jianmin Zhang, Yaan Hu
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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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Prediction of Energy Dissipation and Length of Jump over Modified Stepped Spillway using Empirical and Adaptive Neuro-fuzzy Inference System Technique [PDF]
Journal of Applied Fluid MechanicsThis study aims to enhance energy dissipation efficiency by introducing an alternative design to conventional stepped spillways. To achieve this, modified stepped spillway (MSS) with reflector were used and analyzed experimentally for energy dissipation ...
P. Dharmadhikari, S. Gandhi
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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.
Harshinie Karunarathna +2 more
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Location of inception point of alternating steps stepped spillways
Sulaimani Journal for Engineering Sciences, 2023 This study explored the effects of flat-stepped spillways having alternating steps on the inception point location. Two wooden stepped spillways with a longitudinal slope of 26.6° were constructed in a rectangular flume and tested at various discharges ...
Burhan S. Muhammed1 +1 more
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Improving energy dissipation on stepped spillways using breakers
Ain Shams Engineering Journal, 2018 Stepped spillways have many applications in dam structures, and river engineering. Moreover, stilling basins can be constructed with lower costs as energy dissipation by adding appurtenances to these stilling basins.
Esam Helal
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Hydraulic performance of a pre-aerated stilling basin: Experimental study. [PDF]
PLoS ONESpillway chutes are critical in dam flood control, particularly in high dams where high water heads and large discharge in narrow canyons amplify the demand for safe discharging. For large unit discharges in spillways, aeration protection is essential to
Yu Zhou +6 more
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Evaluation of advanced AI models for accurate prediction and uncertainty analysis of aeration inception in hydrofoil-crested stepped spillways [PDF]
Scientific ReportsAccurate prediction of the aeration inception point (L i ) in hydrofoil-crested stepped spillways (HSSs) is crucial for preventing cavitation damage and ensuring safe energy dissipation and flow regulation.
Pourya Nejatipour +6 more
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Capturing Free Surface Dynamics of Flows over a Stepped Spillway Using a Depth Camera. [PDF]
Sensors (Basel)K C MR, Crookston BM, Bung DB.
europepmc +2 more sources