Numerical and Physical Modelling of the Performance of the Pro-vortex Vanes in Shaft Spillways
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00357144" target="_blank" >RIV/68407700:21110/21:00357144 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1757-899X/1203/3/032082" target="_blank" >https://doi.org/10.1088/1757-899X/1203/3/032082</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/1203/3/032082" target="_blank" >10.1088/1757-899X/1203/3/032082</a>
Alternative languages
Result language
angličtina
Original language name
Numerical and Physical Modelling of the Performance of the Pro-vortex Vanes in Shaft Spillways
Original language description
The paper focuses on the analysis of hydraulic conditions in the proximity of the intake part of high shaft spillways equipped with pro-vortex vanes and discusses recent enhancements in modelling of the shaft spillways and compares the acquired results of the performance of the spillway after complete removal or rehabilitation of the vanes in context of capacity and overall hydraulic conditions. Increasing requirements on safety of embankment dams during floods with respect to anticipated effect of the climate change scenarios on parameters of design floods demand further assessment of capabilities of outlet structures to meet the updated needs. Such dam safety assessments often conclude in the need of designing additional measures to improve existing structures. Despite different approach to the evaluation of the uncertainties and subsequent risk assessment the goal of improving safety of large dams remains consistent in the effort of all developed countries. Adjustments of the intake part of shaft spillways can present a valid design option for increasing capacity of the complex spillway / tunnel structure if supported by solid analysis of hydraulic conditions inside these structures. As the governing idea of the pro-vortex vanes is to ensure spiral flow inside the shaft and to minimize the pressure fluctuations the paper presents results from physical model of several designs of the pro-vortex vanes which approximated possible adjustment of tower like shaft spillway of existing large dam in Czech Republic and also results from CFD modelling illustrating the importance of combination of both modelling approaches. For the CFD part, different turbulence models are discussed.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
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)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
IOP Conference Series: Materials Science and Engineering
ISBN
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ISSN
1757-899X
e-ISSN
1757-899X
Number of pages
10
Pages from-to
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Publisher name
IOP Publishing Ltd
Place of publication
Bristol
Event location
Praha online
Event date
Jun 14, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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