A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions

Detalhes bibliográficos
Autor(a) principal: Oliveira, Paulo J.
Data de Publicação: 1998
Outros Autores: Pinho, Fernando, Schulte, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.6/602
Resumo: Results from numerical simulations and guidance from an approximated corrected-theory, developed by Oliveira and Pinho (1997), have been used to arrive at a correlation expressing the irreversible loss coefficient for laminar Newtonian flow in axisymmetric sudden expansions. The correlation is valid for the ranges 1.5 < D2/D1 < 4 and 0.5 < Re < 200 with errors of less than 5%, except for 25 < Re < 100 where the error could be as much as 7%. The recirculation bubble length is also presented for the same range of conditions and the pressure recovery coefficient was calculated for Reynolds numbers above 15.
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spelling A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansionsSudden expansionLoss coefficientPressure recovery coefficientLaminar flowResults from numerical simulations and guidance from an approximated corrected-theory, developed by Oliveira and Pinho (1997), have been used to arrive at a correlation expressing the irreversible loss coefficient for laminar Newtonian flow in axisymmetric sudden expansions. The correlation is valid for the ranges 1.5 < D2/D1 < 4 and 0.5 < Re < 200 with errors of less than 5%, except for 25 < Re < 100 where the error could be as much as 7%. The recirculation bubble length is also presented for the same range of conditions and the pressure recovery coefficient was calculated for Reynolds numbers above 15.uBibliorumOliveira, Paulo J.Pinho, FernandoSchulte, A.2010-04-28T10:07:16Z19981998-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/602enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-01-16T11:37:31ZPortal AgregadorONG
dc.title.none.fl_str_mv A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
title A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
spellingShingle A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
Oliveira, Paulo J.
Sudden expansion
Loss coefficient
Pressure recovery coefficient
Laminar flow
title_short A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
title_full A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
title_fullStr A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
title_full_unstemmed A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
title_sort A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
author Oliveira, Paulo J.
author_facet Oliveira, Paulo J.
Pinho, Fernando
Schulte, A.
author_role author
author2 Pinho, Fernando
Schulte, A.
author2_role author
author
dc.contributor.none.fl_str_mv uBibliorum
dc.contributor.author.fl_str_mv Oliveira, Paulo J.
Pinho, Fernando
Schulte, A.
dc.subject.por.fl_str_mv Sudden expansion
Loss coefficient
Pressure recovery coefficient
Laminar flow
topic Sudden expansion
Loss coefficient
Pressure recovery coefficient
Laminar flow
description Results from numerical simulations and guidance from an approximated corrected-theory, developed by Oliveira and Pinho (1997), have been used to arrive at a correlation expressing the irreversible loss coefficient for laminar Newtonian flow in axisymmetric sudden expansions. The correlation is valid for the ranges 1.5 < D2/D1 < 4 and 0.5 < Re < 200 with errors of less than 5%, except for 25 < Re < 100 where the error could be as much as 7%. The recirculation bubble length is also presented for the same range of conditions and the pressure recovery coefficient was calculated for Reynolds numbers above 15.
publishDate 1998
dc.date.none.fl_str_mv 1998
1998-01-01T00:00:00Z
2010-04-28T10:07:16Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.6/602
url http://hdl.handle.net/10400.6/602
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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repository.mail.fl_str_mv
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