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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/66080
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dc.contributor.authorTelis-Romero, Javier-
dc.contributor.authorGratao, Aha Carolina A-
dc.contributor.authorGarcia-Cruz, Crispin H.-
dc.contributor.authorTelis, Vania R N-
dc.date.accessioned2014-05-27T11:19:52Z-
dc.date.accessioned2016-10-25T18:16:14Z-
dc.date.available2014-05-27T11:19:52Z-
dc.date.available2016-10-25T18:16:14Z-
dc.date.issued2000-01-01-
dc.identifier.citationCiencia and Engenharia/ Science and Engineering Journal, v. 9, n. 1, p. 78-82, 2000.-
dc.identifier.issn0103-944X-
dc.identifier.urihttp://hdl.handle.net/11449/66080-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/66080-
dc.description.abstractFriction loss coefficients for laminar flow of xantan gum solutions (concentrations in the range of 0.1-0.5% by weight) through valves and fittings were experimentally determined. The rheological behavior, studied by means of a concentric cylinder rheometer, was pseudoplastic, being well described by the Ostwald-De Waele model with non-linear correlation coefficients (r) between 0.998 and 0.999. In the pressure drop measurements the following fittings were employed: completely open and half way open ball valve, completely open and half way open angle valve, tee used like coupling, tee used like a 90° elbow, short radius 90° elbow and coupling. The results showed that the friction loss coefficients increased with decreasing generalized Reynolds number. The friction loss coefficients could be well adjusted by a potential model, suggested by Kittredge & Rowley (1957) for Newtonian fluids, K f = A(Re g) -B, with correlation coefficients between 0.837 and 0.999.en
dc.format.extent78-82-
dc.language.isopor-
dc.sourceScopus-
dc.subjectCorrelation methods-
dc.subjectFriction-
dc.subjectNon Newtonian liquids-
dc.subjectPipe fittings-
dc.subjectPressure drop-
dc.subjectPressure measurement-
dc.subjectReynolds number-
dc.subjectRheology-
dc.subjectRheometers-
dc.subjectValves (mechanical)-
dc.subjectConcentric cylinder rheometers-
dc.subjectFriction loss coefficients-
dc.subjectNonlinear correlation coefficients-
dc.subjectOpen ball valves-
dc.subjectXantan gum solutions-
dc.subjectLaminar flow-
dc.titleCoeficientes de perda de carga em valvulas e acessorios no escoamento laminar de fluidos nao-Newtonianospt
dc.title.alternativeFriction loss coefficients across valves and fittings for laminar flow of non-Newtonian fluidsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUNESP, Sao Jose do Rio Preto-
dc.description.affiliationUnespUNESP, Sao Jose do Rio Preto-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofCiencia and Engenharia/ Science and Engineering Journal-
dc.identifier.scopus2-s2.0-0033684574-
dc.identifier.orcid0000-0002-2553-4629pt
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