Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways

Detalhes bibliográficos
Autor(a) principal: Priebe,Priscila dos Santos
Data de Publicação: 2021
Outros Autores: Ferla,Rute, Novakoski,Carolina Kuhn, Abreu,Aline Saupe, Teixeira,Eder Daniel, Prá,Mauricio Dai, Marques,Marcelo Giulian
Tipo de documento: Artigo
Idioma: eng
Título da fonte: RBRH (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100211
Resumo: ABSTRACT The operation of stepped spillways is limited by a range of discharges due to the risk of occurrence of the cavitation phenomenon and erosion on its steps. Since there is a demand for spillways with the possibility of overflow of greater discharges, the designs seek to increase the air concentration of the flow, which can occur through the installation of piers in the spillway in order to protect the structure from the above mentioned damage. The aim of this work is to analyze flow characteristics and extreme minimum and maximum pressures with non-exceedance probability of 0.1% and 99.9% acting next to the step edges of the spillway with aeration induced by piers through an experimental analysis in a physical model. Based on the results obtained, flow behavior was defined and equations for predicting the extreme pressures that occur along the stepped spillway with aeration induced by piers were proposed.
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spelling Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillwaysPre-aerationAeratorsPhysical modelAerated flowABSTRACT The operation of stepped spillways is limited by a range of discharges due to the risk of occurrence of the cavitation phenomenon and erosion on its steps. Since there is a demand for spillways with the possibility of overflow of greater discharges, the designs seek to increase the air concentration of the flow, which can occur through the installation of piers in the spillway in order to protect the structure from the above mentioned damage. The aim of this work is to analyze flow characteristics and extreme minimum and maximum pressures with non-exceedance probability of 0.1% and 99.9% acting next to the step edges of the spillway with aeration induced by piers through an experimental analysis in a physical model. Based on the results obtained, flow behavior was defined and equations for predicting the extreme pressures that occur along the stepped spillway with aeration induced by piers were proposed.Associação Brasileira de Recursos Hídricos2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100211RBRH v.26 2021reponame:RBRH (Online)instname:Associação Brasileira de Recursos Hídricos (ABRH)instacron:ABRH10.1590/2318-0331.262120200113info:eu-repo/semantics/openAccessPriebe,Priscila dos SantosFerla,RuteNovakoski,Carolina KuhnAbreu,Aline SaupeTeixeira,Eder DanielPrá,Mauricio DaiMarques,Marcelo Giulianeng2021-05-26T00:00:00Zoai:scielo:S2318-03312021000100211Revistahttps://www.scielo.br/j/rbrh/https://old.scielo.br/oai/scielo-oai.php||rbrh@abrh.org.br2318-03311414-381Xopendoar:2021-05-26T00:00RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH)false
dc.title.none.fl_str_mv Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
title Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
spellingShingle Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
Priebe,Priscila dos Santos
Pre-aeration
Aerators
Physical model
Aerated flow
title_short Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
title_full Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
title_fullStr Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
title_full_unstemmed Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
title_sort Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
author Priebe,Priscila dos Santos
author_facet Priebe,Priscila dos Santos
Ferla,Rute
Novakoski,Carolina Kuhn
Abreu,Aline Saupe
Teixeira,Eder Daniel
Prá,Mauricio Dai
Marques,Marcelo Giulian
author_role author
author2 Ferla,Rute
Novakoski,Carolina Kuhn
Abreu,Aline Saupe
Teixeira,Eder Daniel
Prá,Mauricio Dai
Marques,Marcelo Giulian
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Priebe,Priscila dos Santos
Ferla,Rute
Novakoski,Carolina Kuhn
Abreu,Aline Saupe
Teixeira,Eder Daniel
Prá,Mauricio Dai
Marques,Marcelo Giulian
dc.subject.por.fl_str_mv Pre-aeration
Aerators
Physical model
Aerated flow
topic Pre-aeration
Aerators
Physical model
Aerated flow
description ABSTRACT The operation of stepped spillways is limited by a range of discharges due to the risk of occurrence of the cavitation phenomenon and erosion on its steps. Since there is a demand for spillways with the possibility of overflow of greater discharges, the designs seek to increase the air concentration of the flow, which can occur through the installation of piers in the spillway in order to protect the structure from the above mentioned damage. The aim of this work is to analyze flow characteristics and extreme minimum and maximum pressures with non-exceedance probability of 0.1% and 99.9% acting next to the step edges of the spillway with aeration induced by piers through an experimental analysis in a physical model. Based on the results obtained, flow behavior was defined and equations for predicting the extreme pressures that occur along the stepped spillway with aeration induced by piers were proposed.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100211
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100211
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2318-0331.262120200113
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Recursos Hídricos
publisher.none.fl_str_mv Associação Brasileira de Recursos Hídricos
dc.source.none.fl_str_mv RBRH v.26 2021
reponame:RBRH (Online)
instname:Associação Brasileira de Recursos Hídricos (ABRH)
instacron:ABRH
instname_str Associação Brasileira de Recursos Hídricos (ABRH)
instacron_str ABRH
institution ABRH
reponame_str RBRH (Online)
collection RBRH (Online)
repository.name.fl_str_mv RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH)
repository.mail.fl_str_mv ||rbrh@abrh.org.br
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