Energy Dissipation in Stilling Basins with Side Jets from Highly Convergent Chutes

Spillways with Highly Converging Chutes (HCCs) are a non-conventional alternative that can be applied to achieve a higher outflow capacity when the weir length exceeds the width of the valley at the toe of gravity or arch dams. This kind of spillway has been used in the past, but no general studies...

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Published inWater (Basel) Vol. 13; no. 10; p. 1343
Main Authors Moran, Rafael, Toledo, Miguel Ángel, Peraita, Javier, Pellegrino, Raffaella
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.05.2021
Subjects
Analysis
Arch dams
Basins
bucket
chute
Chutes
Concrete
dam
Dam engineering
Dams
Design parameters
Energy dissipation
Experimental research
flood
Gravity
Gravity dams
Hydraulics
Laboratories
Spain
spillway
Spillways
stilling basin
Stilling basins
Spain
United States > US
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Abstract Spillways with Highly Converging Chutes (HCCs) are a non-conventional alternative that can be applied to achieve a higher outflow capacity when the weir length exceeds the width of the valley at the toe of gravity or arch dams. This kind of spillway has been used in the past, but no general studies have yet been published. This article summarizes experimental research work aiming to increase the knowledge of the effect of some design parameters of HCCs on the energy dissipation in the stilling basin at the toe of the dam. As a comparison reference, we use the Type I stilling basins, widely known by the technical dam engineering community. The obtained results show that spillways with HCCs are a promising alternative to traditional designs, combining the ability to increase the weir length with a high capacity to dissipate energy through the impingement effect of the frontal and the side jets inside the stilling basin.
AbstractList Spillways with Highly Converging Chutes (HCCs) are a non-conventional alternative that can be applied to achieve a higher outflow capacity when the weir length exceeds the width of the valley at the toe of gravity or arch dams. This kind of spillway has been used in the past, but no general studies have yet been published. This article summarizes experimental research work aiming to increase the knowledge of the effect of some design parameters of HCCs on the energy dissipation in the stilling basin at the toe of the dam. As a comparison reference, we use the Type I stilling basins, widely known by the technical dam engineering community. The obtained results show that spillways with HCCs are a promising alternative to traditional designs, combining the ability to increase the weir length with a high capacity to dissipate energy through the impingement effect of the frontal and the side jets inside the stilling basin.
Audience Academic
Author Moran, Rafael
Toledo, Miguel Ángel
Pellegrino, Raffaella
Peraita, Javier
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Cites_doi 10.1061/(ASCE)HY.1943-7900.0000584
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10.1061/40792(173)417
10.1201/b12349-3
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2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
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SubjectTerms Analysis
Arch dams
Basins
bucket
chute
Chutes
Concrete
dam
Dam engineering
Dams
Design parameters
Energy dissipation
Experimental research
flood
Gravity
Gravity dams
Hydraulics
Laboratories
Spain
spillway
Spillways
stilling basin
Stilling basins
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Title Energy Dissipation in Stilling Basins with Side Jets from Highly Convergent Chutes
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