Results 41 to 50 of about 657 (163)
Re-Aeration on Stepped Spillways with Special Consideration of Entrained and Entrapped Air
Geosciences, 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, Daniel Valero
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Air-water flows on stepped spillways with inclined steps [PDF]
Australasian Fluid Mechanics Conference (AFMC), 2020 Stepped spillways have been constructed worldwide and the overflow is characterised by intense turbulent dissipation and strong self-aeration. The current study investigated experimentally the two-phase flow properties on stepped chutes equipped with inclined downward steps.
Yvan Arosquipa Nina +2 more
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Investigating the Effect of Different Arrangements of Obstacle on the Stepped Spillway on Flow Characteristics and Energy Dissipation [PDF]
علوم و مهندسی آبیاری, 2020 This study has investigated the effect of roughness such as screen and 3D-porous obstacle with different arrangements on steps, 3D-porous obstacle, and continuous obstacle at the edge of steps in two slopes of 1:2 and 1:3 for all three regimes in the ...
Seyed Amin Asghari Pari +1 more
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A review of accidents and failures of stepped spillways and weirs [PDF]
Proceedings of the Institution of Civil Engineers - Water and Maritime Engineering, 2000 Recent advances in technology have permitted the construction of large reservoirs and chutes. These developments have necessitated the development of new design and construction techniques, particularly with the provision of adequate flood release facilities and safe energy dissipation.
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Flow in the gradually converging stepped spillway [PDF]
, 2018 Степенасти брзотоци су популарна мера за дисипацију енергије преливене воде.Своју популарност дугују добрим дисипационим карактеристикама и нижом ценомизградње у односу на класичне брзотоке са глатним дном.
Zindović, Budo
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History of stepped channels and spillways: a rediscovery of the “wheel” [PDF]
Canadian Journal of Civil Engineering, 1995 Recently, spillways with a stepped profile have regained interest and favor among design engineers to pass flood waters over the dams. The stepped geometry enhances the energy dissipation above the spillway and reduces the size of a downstream stilling basin.
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Characteristics of Energy Dissipation for “V”-type Stepped Spillway
工程科学与技术, 2010 :A new type of stepped spillway with the plane layout similar to alphabet “V” was put forward. Numerical investigations were performed both for this type of stepped spillway and traditional stepped spillway.
Tian Zhong +4 more
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Evaluating the Effect of Anti-Vortex Plates on Discharge Coefficient in Short Throat Shaft Spillway [PDF]
Journal of Hydraulic and Water EngineeringKnowing more about the flow behavior of short-stepped shaft spillways helps to use this structure better and more efficiently. Moreover, using a vortex breaker greatly affects passing flow through Shaft Spillway. For use more efficiently, the risk of the
Roozbeh Aghamajidi
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Modelling Flow over Stepped Spillway with Varying Chute Geometry
, 2012 This study has modeled some characteristics of the flows over stepped spillway with varying chute geometry through a laboratory investigation. Using six physically built stepped spillway models, with each having six horizontal plain steps at 4cm constant
Otun, JA, Munta, S, Adie, DB
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Physical Modeling of an Aerating Stepped Spillway
, 2016 To mitigate the negative effects on the water quality in the downstream river of a projected large dam, and in particular to increase the dissolved oxygen concentration during low flow periods within the first 10 years of dam operation, an aerating weir has been designed and tested on a physical model at the Laboratory of Engineering Hydraulics (HECE ...
Erpicum, Sébastien +5 more
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