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Accuracy/speed analysis of pipe friction factor correlations

2019Conference object Open access
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dc.contributor.authorMuzzo, Luiz Eduardo
dc.contributor.authorPinho, Diana
dc.contributor.authorLima, Luiz Eduardo Melo
dc.contributor.authorRibeiro, Luís Frölén
dc.date.accessioned2020-03-30T08:56:05Z
dc.date.available2020-03-30T08:56:05Z
dc.date.issued2019
dc.description.abstractThe Colebrook [1] equation is considered the standard for the calculation of friction factor for turbulent flow in commercial pipes, but it is implicit, and therefore it must be computed by iterative methods. Although such iterative computation quickly converges, the computational time in large pipe system simulations can be reduced using an accurate explicit correlation. A review of the up to date literature identified 30 different explicit correlations. In order to determine which correlation is the best alternative to Colebrook’s, both accuracy and computational burden were compared. The accuracy of each explicit correlation was compared against Colebrook’s correlation using the mean and maximum relative errors and the coefficient of determination. Also, the computational time of each equation was measured using the tic and toc functions in GNU Octave software. It was found that the iterative computation of the Colebrook equation demands about 2.6 times the computational time of the slowest explicit correlation. The correlations with the best balance between accuracy and computational burden are, in decreasing order of accuracy and increasing order of speed, correlations by Serghides [13] (Eqs. (17), (18), (19), and (20)), by Shacham [8] (Eqs. (10) and (11)), by Brkić and Praks [33] (Eqs. (53), (54), (55), and (56)), and by Fang et al. [19] (Eq. (28)).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMuzzo, Luiz Eduardo; Pinho, Diana; Lima, Luiz Eduardo Melo; Ribeiro, Luís Frölén (2019). Accuracy/speed analysis of pipe friction factor correlations. In Monteiro, J. [et al.] (eds) INCREaSE 2019: proceedings of the 2nd International Congress on Engineering and Sustainability in the XXI Century. Faro. p. 664-679. ISBN 978-3-030-30937-4pt_PT
dc.identifier.doi10.1007/978-3-030-30938-1_51pt_PT
dc.identifier.isbn978-3-030-30937-4
dc.identifier.urihttp://hdl.handle.net/10198/21165
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Nature Switzerlandpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPipe flowpt_PT
dc.subjectFriction factorpt_PT
dc.subjectColebrookpt_PT
dc.subjectCorrelationspt_PT
dc.titleAccuracy/speed analysis of pipe friction factor correlationspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceFaro, Portugalpt_PT
oaire.citation.endPage679pt_PT
oaire.citation.startPage664pt_PT
oaire.citation.titleInternational Congress on Engineering and Sustainability in the XXI Century: INCREaSE 2019pt_PT
person.familyNamePinho
person.familyNameRibeiro
person.givenNameDiana
person.givenNameLuís Frölén
person.identifier214770
person.identifier.ciencia-id5214-ED0C-35E8
person.identifier.ciencia-id7816-27A0-164D
person.identifier.orcid0000-0002-3884-6496
person.identifier.orcid0000-0003-4336-6216
person.identifier.scopus-author-id55938870500
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication02bf2dd9-33ed-4d87-b61d-ca39c51f8451
relation.isAuthorOfPublicationd42d13d9-85f9-43bf-8e17-b0666df89c51
relation.isAuthorOfPublication.latestForDiscovery02bf2dd9-33ed-4d87-b61d-ca39c51f8451

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