Uncertainty of pipe flow friction factor equations
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10198/23887 |
Resumo: | This paper presents the turbulent pipe flow analysis of the friction factor’s uncertainty for two different experimental scenarios: high-precision and standard engineering instruments. One deduced the uncertainty function of the implicit Colebrook’s correlation and five of the most accurate and fast explicit correlations. The joint propagation of uncertainties is evaluated, sorted and mapped for the probabilities of intersection of the Colebrook’s uncertainties against the alternative correlations. The maps display the fastest to the slowest equation for standard engineering and high-precision instruments, respectively for 50% and 95% intersection. For the standard engineering instruments, the least accurate of the explicit correlations are applicable and within the Colebrook uncertainty bounds. The most accurate correlations are necessary for specific roughness and Reynolds's domains cases and for high-precision research instruments. Results also show that, for high-precision scenarios with a 95% uncertainty fit, there is still room for improvement in the explicit correlations. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Uncertainty of pipe flow friction factor equationsFriction factorFluid flowColebrook equationThis paper presents the turbulent pipe flow analysis of the friction factor’s uncertainty for two different experimental scenarios: high-precision and standard engineering instruments. One deduced the uncertainty function of the implicit Colebrook’s correlation and five of the most accurate and fast explicit correlations. The joint propagation of uncertainties is evaluated, sorted and mapped for the probabilities of intersection of the Colebrook’s uncertainties against the alternative correlations. The maps display the fastest to the slowest equation for standard engineering and high-precision instruments, respectively for 50% and 95% intersection. For the standard engineering instruments, the least accurate of the explicit correlations are applicable and within the Colebrook uncertainty bounds. The most accurate correlations are necessary for specific roughness and Reynolds's domains cases and for high-precision research instruments. Results also show that, for high-precision scenarios with a 95% uncertainty fit, there is still room for improvement in the explicit correlations.ElsevierBiblioteca Digital do IPBMuzzo, Luiz EduardoMatoba, Gláucio KenjiRibeiro, Luís Frölén2021-09-08T10:06:28Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/23887engMuzzo, Luiz Eduardo; Matoba, Gláucio Kenji; Ribeiro, Luís Frölén (2021). Uncertainty of pipe flow friction factor equations. Mechanics Research Communications. ISSN 0093-6413. 11610.1016/j.mechrescom.2021.103764info: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:RCAAP2023-11-21T10:53:18Zoai:bibliotecadigital.ipb.pt:10198/23887Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:14:46.337886Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Uncertainty of pipe flow friction factor equations |
title |
Uncertainty of pipe flow friction factor equations |
spellingShingle |
Uncertainty of pipe flow friction factor equations Muzzo, Luiz Eduardo Friction factor Fluid flow Colebrook equation |
title_short |
Uncertainty of pipe flow friction factor equations |
title_full |
Uncertainty of pipe flow friction factor equations |
title_fullStr |
Uncertainty of pipe flow friction factor equations |
title_full_unstemmed |
Uncertainty of pipe flow friction factor equations |
title_sort |
Uncertainty of pipe flow friction factor equations |
author |
Muzzo, Luiz Eduardo |
author_facet |
Muzzo, Luiz Eduardo Matoba, Gláucio Kenji Ribeiro, Luís Frölén |
author_role |
author |
author2 |
Matoba, Gláucio Kenji Ribeiro, Luís Frölén |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Muzzo, Luiz Eduardo Matoba, Gláucio Kenji Ribeiro, Luís Frölén |
dc.subject.por.fl_str_mv |
Friction factor Fluid flow Colebrook equation |
topic |
Friction factor Fluid flow Colebrook equation |
description |
This paper presents the turbulent pipe flow analysis of the friction factor’s uncertainty for two different experimental scenarios: high-precision and standard engineering instruments. One deduced the uncertainty function of the implicit Colebrook’s correlation and five of the most accurate and fast explicit correlations. The joint propagation of uncertainties is evaluated, sorted and mapped for the probabilities of intersection of the Colebrook’s uncertainties against the alternative correlations. The maps display the fastest to the slowest equation for standard engineering and high-precision instruments, respectively for 50% and 95% intersection. For the standard engineering instruments, the least accurate of the explicit correlations are applicable and within the Colebrook uncertainty bounds. The most accurate correlations are necessary for specific roughness and Reynolds's domains cases and for high-precision research instruments. Results also show that, for high-precision scenarios with a 95% uncertainty fit, there is still room for improvement in the explicit correlations. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09-08T10:06:28Z 2021 2021-01-01T00:00:00Z |
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/10198/23887 |
url |
http://hdl.handle.net/10198/23887 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Muzzo, Luiz Eduardo; Matoba, Gláucio Kenji; Ribeiro, Luís Frölén (2021). Uncertainty of pipe flow friction factor equations. Mechanics Research Communications. ISSN 0093-6413. 116 10.1016/j.mechrescom.2021.103764 |
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.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799135427994583040 |