Effect of Energy Dissipation on Scour Hole Development Downstream of the Chute

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00353137" target="_blank" >RIV/68407700:21110/21:00353137 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1755-1315/906/1/012117" target="_blank" >https://doi.org/10.1088/1755-1315/906/1/012117</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/906/1/012117" target="_blank" >10.1088/1755-1315/906/1/012117</a>

Result language

angličtina

Original language name

Effect of Energy Dissipation on Scour Hole Development Downstream of the Chute

Original language description

An energy dissipation on hydraulic structures is a scientifically highly examined field of study. Gained knowledge can be used to ensure the safety of the hydraulic structures and the channels which is crucial during floods. Above that, those structures are also part of the critical infrastructure therefore their function is necessary. It is assumed that in the Czech Republic the precipitation distribution is changing due to climate change thus episodes of extreme floods may be observed more often. The paper brings brand new knowledge on the kinetic energy dissipation on the chute and in the stilling basin and its impact on the riverbed scour hole development. The presented research was conducted in the WMEC of CTU in Prague. The research aimed to examine the energy dissipation mechanism on different geometric modifications of the construction of spillway chute and stilling basin and its impact on the process of scour hole development. These various types of dams’ flood safety equipment were examined in the hydraulic laboratory: form of the spillway without any stilling basin; form of the spillway and the stilling basin; the chute width was reduced, and the stilling basin had the full width; steps were added on the narrowed chute and the and stilling basin had the full width; only the spillway crest was reduced to a half-width; only the stilling basin width was smoothly reduced; the chute’s width was smoothly reduced along the chute and the stilling basin had full width; the chute’s width was smoothly reduced along the chute and the stilling basin had the width reduced to a half. The flow, water levels, scour hole and deposit dimensions were measured. Then the amount of energy dissipated was computed. The correlation and connection between energy dissipation and scour hole development was investigated. These outcomes can be used as a recommendation of an appropriate construction design to provide better flood safety of the hydraulic structure.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/VI20192022121" target="_blank" >VI20192022121: Enhancement of Resistance of Dams and Reservoirs as Key Elements of the Water Infrastructure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

7th World Multidisciplinary Earth Sciences Symposium - WMESS 2021

ISBN

—

ISSN

1755-1315

e-ISSN

1755-1315

Number of pages

9

Pages from-to

1-9

Publisher name

IOP Publishing Ltd.

Place of publication

Bristol

Event location

Praha

Event date

Sep 6, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—