Gabion Stepped Spillway: Interactions between Free-Surface, Cavity, and Seepage Flows
نویسندگان
چکیده
منابع مشابه
Two-Phase Flow on a Gabion Stepped Spillway: Cavity and Seepage Air-Water Motion
On a stepped spillway, the steps contribute to some dissipation of the turbulent kinetic energy, while free-surface aeration can be very intense. The aim of this study is to investigate the two-phase flow properties on a gabion stepped spillway, including both free-surface and seepage flows, as well as the bubbly flow interactions at the gabion interface. Detailed measurements were conducted in...
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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 ...
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New experiments were conducted in a large stepped channel with a 22o slope operating at large Reynolds numbers. Interactions between free-surface and cavity recirculation were systematically investigated in the skimming flow regime. Turbulence manipulation was further conducted and identical experiments were performed with 4 configurations. Basic results demonstrated a strong influence of cavit...
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Self-sustained instabilities and pseudo-periodic motion may be observed in hydraulic structures and industrial flows. Documented examples include the hydraulic jump, sloshing motion in a reservoir and surging waves in pooled stepped spillways. The instabilities may generate some very large turbulence levels and integral turbulent scales, combining the contributions of both slow fluctuations and...
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Stepped block protection has considerable potential as a low-cost method for the construction of chute spillways and the protection of embankments from erosion by overtopping flow. Stepped spillways are structurally stable, resistant to water loads and significantly increase the rate of energy dissipation on the spillway face thus eliminating or greatly reducing the need for a large energy diss...
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ژورنال
عنوان ژورنال: Journal of Hydraulic Engineering
سال: 2016
ISSN: 0733-9429,1943-7900
DOI: 10.1061/(asce)hy.1943-7900.0001120