Stepped Spillway Slope Effect on Air Entrainment and Inception Point Location
نویسندگان
چکیده
منابع مشابه
Stepped Spillway Flows and Air Entrainment
Stepped spillways have become a popular method for handling flood releases. The steps increase significantly 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 (RCC) and gabion construction techniques results in low additional cost for the ...
متن کاملsurvey the effect of downstream crest chute slope on the natural air entrainment point in skimming flow in stepped spillway
abstract stepped spillways are of most important hydraulic constructions to dissipation energy of water flow. these constructions are used in opening channel to transfer water from upper level to lower level. because of considerable effect of steps on flow dissipation energy and also the resulted developments in construction of roller competed concrete rcc, the mentioned constructions have draw...
متن کاملAir Entrainment and Pressure Development in Skimming Flow on an Abrupt Slope Change on Stepped Spillways
Numerous stepped spillways were built to date, namely on RCC gravity dams or on valley flanks besides embankment or rockfill dams, while some others are currently under design or construction. In some cases, slope changes may be required on stepped chutes, due to the topography, leading to reduced excavation and related economic benefits. A quite limited number of stepped spillways have been bu...
متن کاملEffects of End Sill and Step Slope on Stepped Spillway Energy Dissipation
In this study, experimental procedure and laboratory works have been conducted to investigate the energy loss rate on stepped spillway, using inclined steps together with end sill. To have a more elucidated investigation inclined steps with different slopes (Horizontal , 7, 10, and 12 degrees with respect to the horizon) and end sill with different thicknesses (5 and 10 mm) and heights (6, 8, 1...
متن کاملAir Entrainment and Energy Dissipation on Gabion Stepped Weirs
In the last three decades the design of stepped spillways regained some interest because of their suitability with new construction methods including gabion placement. In this study, the hydraulic performances of gabion stepped weirs were investigated experimentally in terms of the air-water flow properties and energy dissipation rate. A physical study was performed in a relatively large size f...
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ژورنال
عنوان ژورنال: Water
سال: 2021
ISSN: 2073-4441
DOI: 10.3390/w13101428