Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497

Detalhes bibliográficos
Autor(a) principal: Cardoso, Gabriel Greco Guimarães
Data de Publicação: 2008
Outros Autores: Frizzone, José Antônio, Resende, Roberto
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta Scientiarum. Agronomy (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3497
Resumo: On this paper, the results of an experimental study on the hydraulic friction loss for small-diameter polyethylene pipes are reported. The experiment was carried out using a range of Reynolds number between 6000 to 72000, obtained by varying discharge at 20ºC water temperature, with internal pipe diameters of 10.0 mm, 12.9 mm, 16.1 mm, 17.4 mm and 19.7 mm. According to the analysis results and experimental conditions, the friction factor (f) of the Darcy-Weisbach equation can be estimated with c = 0.300 and m = 0.25. The Blasius equation (c = 0.316 and m = 0.25) gives an overestimate of friction loss, although this fact is non-restrictive for micro-irrigation system designs. The analysis shows that both the Blasius and the adjusted equation parameters allow for accurate friction factor estimates, characterized by low mean error (5.1%).
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spelling Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497Fator de atrito em tubos de polietileno de pequenos diâmetros - DOI: 10.4025/actasciagron.v30i3.3497head lossturbulent flowBlasius equationDarcy-Weisbach equationperda de cargaescoamento turbulentoequação de Blasiusequação de Darcy-Weisbach5.01.00.00-9 AgronomiaOn this paper, the results of an experimental study on the hydraulic friction loss for small-diameter polyethylene pipes are reported. The experiment was carried out using a range of Reynolds number between 6000 to 72000, obtained by varying discharge at 20ºC water temperature, with internal pipe diameters of 10.0 mm, 12.9 mm, 16.1 mm, 17.4 mm and 19.7 mm. According to the analysis results and experimental conditions, the friction factor (f) of the Darcy-Weisbach equation can be estimated with c = 0.300 and m = 0.25. The Blasius equation (c = 0.316 and m = 0.25) gives an overestimate of friction loss, although this fact is non-restrictive for micro-irrigation system designs. The analysis shows that both the Blasius and the adjusted equation parameters allow for accurate friction factor estimates, characterized by low mean error (5.1%).Este trabalho reporta aos resultados de um experimento sobre perda de carga e fator de atrito em tubos de polietileno de pequenos diâmetros. Utilizaram-se cinco tubos com os seguintes diâmetros internos: 10,0 mm, 12,9 mm, 16,1 mm, 17,4 mm e 19,7 mm. O experimento foi conduzido para números de Reynolds, no intervalo de 6000 a 72000, obtidos pela variação da vazão nos tubos, a uma temperatura média da água de 20ºC. Os resultados foram analisados e, de acordo com as condições experimentais, o fator de atrito f da equação de Darcy-Weisbach pode ser estimado com c = 0,300 e m = 0,25. A equação de Blasius (c = 0,316 e m = 0,25) superestimou os valores do fator de atrito para todos os tubos analisados, porém esse fato não constitui limitação para sua utilização em projetos de microirrigação. As análises mostraram que as duas equaçõesUniversidade Estadual de Maringá2008-05-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/349710.4025/actasciagron.v30i3.3497Acta Scientiarum. Agronomy; Vol 30 No 3 (2008); 299-305Acta Scientiarum. Agronomy; v. 30 n. 3 (2008); 299-3051807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3497/2476Cardoso, Gabriel Greco GuimarãesFrizzone, José AntônioResende, Robertoinfo:eu-repo/semantics/openAccess2022-11-23T18:37:58Zoai:periodicos.uem.br/ojs:article/3497Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:37:58Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
Fator de atrito em tubos de polietileno de pequenos diâmetros - DOI: 10.4025/actasciagron.v30i3.3497
title Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
spellingShingle Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
Cardoso, Gabriel Greco Guimarães
head loss
turbulent flow
Blasius equation
Darcy-Weisbach equation
perda de carga
escoamento turbulento
equação de Blasius
equação de Darcy-Weisbach
5.01.00.00-9 Agronomia
title_short Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
title_full Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
title_fullStr Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
title_full_unstemmed Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
title_sort Friction factor for small diameter polyethylene pipes - DOI: 10.4025/actasciagron.v30i3.3497
author Cardoso, Gabriel Greco Guimarães
author_facet Cardoso, Gabriel Greco Guimarães
Frizzone, José Antônio
Resende, Roberto
author_role author
author2 Frizzone, José Antônio
Resende, Roberto
author2_role author
author
dc.contributor.author.fl_str_mv Cardoso, Gabriel Greco Guimarães
Frizzone, José Antônio
Resende, Roberto
dc.subject.por.fl_str_mv head loss
turbulent flow
Blasius equation
Darcy-Weisbach equation
perda de carga
escoamento turbulento
equação de Blasius
equação de Darcy-Weisbach
5.01.00.00-9 Agronomia
topic head loss
turbulent flow
Blasius equation
Darcy-Weisbach equation
perda de carga
escoamento turbulento
equação de Blasius
equação de Darcy-Weisbach
5.01.00.00-9 Agronomia
description On this paper, the results of an experimental study on the hydraulic friction loss for small-diameter polyethylene pipes are reported. The experiment was carried out using a range of Reynolds number between 6000 to 72000, obtained by varying discharge at 20ºC water temperature, with internal pipe diameters of 10.0 mm, 12.9 mm, 16.1 mm, 17.4 mm and 19.7 mm. According to the analysis results and experimental conditions, the friction factor (f) of the Darcy-Weisbach equation can be estimated with c = 0.300 and m = 0.25. The Blasius equation (c = 0.316 and m = 0.25) gives an overestimate of friction loss, although this fact is non-restrictive for micro-irrigation system designs. The analysis shows that both the Blasius and the adjusted equation parameters allow for accurate friction factor estimates, characterized by low mean error (5.1%).
publishDate 2008
dc.date.none.fl_str_mv 2008-05-27
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3497
10.4025/actasciagron.v30i3.3497
url http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3497
identifier_str_mv 10.4025/actasciagron.v30i3.3497
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3497/2476
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 Universidade Estadual de Maringá
publisher.none.fl_str_mv Universidade Estadual de Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Agronomy; Vol 30 No 3 (2008); 299-305
Acta Scientiarum. Agronomy; v. 30 n. 3 (2008); 299-305
1807-8621
1679-9275
reponame:Acta Scientiarum. Agronomy (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta Scientiarum. Agronomy (Online)
collection Acta Scientiarum. Agronomy (Online)
repository.name.fl_str_mv Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br
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