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Water 2018, 10(4), 460; https://doi.org/10.3390/w10040460

Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways

1
Faculty of Civil Engineering, Department of Hydraulic and Environmental Engineering, University of Belgrade, 11000 Belgrade, Serbia
2
Institute for the Development of Water Resources “Jaroslav Černi”, Jaroslava Černog 80, 11226 Belgrade, Serbia
*
Author to whom correspondence should be addressed.
Received: 15 March 2018 / Revised: 4 April 2018 / Accepted: 9 April 2018 / Published: 11 April 2018
(This article belongs to the Section Hydraulics)
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Abstract

The performance of flat stilling basins can be inadequate for conditions when the tailwater depth is insufficient for hydraulic jump stabilization. In such cases, adverse-slope stilling basins can be used because they reduce the necessary tailwater depth. Sloped basins combined with smooth chutes have been the subject of many studies. However, limited research has been done for basins with stepped chutes, which are characterized by intensive flow aeration and high energy dissipation. Based on our scale-model experimental measurements of depth, velocity, and air concentration, we present a momentum-based method to characterize such hydraulic jump: the sequent depth ratio, the length of hydraulic jump roller, and energy dissipation effectiveness. The proposed method provides better agreement with experimental data when compared to existing methods and can be used for preliminary design. View Full-Text
Keywords: hydraulic jump; stepped spillway; hydraulic models; adverse-slope basin; hydraulic structure design hydraulic jump; stepped spillway; hydraulic models; adverse-slope basin; hydraulic structure design
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ljubičić, R.; Zindović, B.; Vojt, P.; Pavlović, D.; Kapor, R.; Savić, L. Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways. Water 2018, 10, 460.

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