Repository logo
 
Publication

Uniform flow of viscoelastic fluids past a confined falling cylinder

2008Journal article Open access
Simple item page
dc.contributor.authorAfonso, A. M.
dc.contributor.authorAlves, M. A.
dc.contributor.authorPinho, Fernando
dc.contributor.authorOliveira, Paulo J.
dc.date.accessioned2010-04-28T10:07:34Z
dc.date.available2010-04-28T10:07:34Z
dc.date.issued2008
dc.description.abstractUniform steady flow of viscoelastic fluids past a cylinder placed between two moving parallel plates is investigated numerically with a finite-volume method. This configuration is equivalent to the steady settling of a cylinder in a viscoelastic fluid, and here, a 50% blockage ratio is considered. Five constitutive models are employed (UCM, Oldroyd-B, FENE-CR, PTT and Giesekus) to assess the effect of rheological properties on the flow kinematics and wake patterns. Simulations were carried out under creeping flow conditions, using very fine meshes, especially in the wake of the cylinder where large normal stresses are observed at high Deborah numbers. Some of the results are compared with numerical data from the literature, mainly in terms of a drag coefficient, and significant discrepancies are found, especially for the constant-viscosity constitutive models. Accurate solutions could be obtained up to maximum Deborah numbers clearly in excess of those reported in the literature, especially with the PTT and FENECR models. The existence or not of a negative wake is identified for each set of model parameters.pt
dc.identifier.urihttp://hdl.handle.net/10400.6/637
dc.languageeng
dc.subjectFalling cylinder - Viscoelastic - UCMpt
dc.subjectOldroyd-Bpt
dc.subjectFENE-CR
dc.subjectPTT
dc.subjectGiesekus
dc.subjectNegative wake
dc.subjectNumerical simulations
dc.titleUniform flow of viscoelastic fluids past a confined falling cylinderpt
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issueVol. 47, No. 3, pp. 325-348pt
oaire.citation.titleRheologica Actapt
person.familyNameAfonso
person.familyNameAlves
person.familyNamePinho
person.familyNameOliveira
person.givenNameAlexandre
person.givenNameManuel
person.givenNameFernando
person.givenNamePaulo J.
person.identifier.ciencia-id301B-AB43-101C
person.identifier.ciencia-id3810-FB97-01DB
person.identifier.ciencia-id7A15-7012-C5DF
person.identifier.orcid0000-0003-2825-0709
person.identifier.orcid0000-0001-6585-6609
person.identifier.orcid0000-0002-9576-4622
person.identifier.orcid0000-0001-9843-7558
person.identifier.ridD-1405-2011
person.identifier.ridA-9394-2008
person.identifier.ridD-1035-2011
person.identifier.ridA-4638-2009
person.identifier.scopus-author-id35588804400
person.identifier.scopus-author-id26040459500
person.identifier.scopus-author-id7006647306
person.identifier.scopus-author-id24280605700
rcaap.rightsopenAccess
rcaap.typearticlept
relation.isAuthorOfPublicatione8397ed9-618a-443a-89d0-e4be297ffe40
relation.isAuthorOfPublication9e511d49-3b72-4ce7-9325-428c59118015
relation.isAuthorOfPublication9933e255-01c8-4867-9506-18a649153d8e
relation.isAuthorOfPublicationf4a5da68-73fb-4a8b-9418-669d76d75f39
relation.isAuthorOfPublication.latestForDiscovery9e511d49-3b72-4ce7-9325-428c59118015

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
ri52.pdf
Size:
975.85 KB
Format:
Adobe Portable Document Format
Download

Collections

ICI - FibEnTech | Documentos por Auto-Depósito
FC - DQ | Documentos por Auto-Depósito