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https://hdl.handle.net/10216/106694
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DC Field | Value | Language |
---|---|---|
dc.creator | L. L. Ferrás | |
dc.creator | A. M. Afonso | |
dc.creator | J. M. Nóbrega | |
dc.creator | F. T. Pinho | |
dc.date.accessioned | 2022-09-14T05:32:37Z | - |
dc.date.available | 2022-09-14T05:32:37Z | - |
dc.date.issued | 2017 | |
dc.identifier.issn | 1070-6631 | |
dc.identifier.other | sigarra:201053 | |
dc.identifier.uri | https://hdl.handle.net/10216/106694 | - |
dc.description.abstract | This work describes a theoretical and numerical investigation of viscoelastic fluid flows, considering slip boundary conditions. The viscoelastic fluid is described by the simplified Phan-Thien-Tanner model, and the governing equations with slip boundary conditions are solved by a finite volume method using (1) a recently proposed methodology to control the growth of the slip velocity along the iterative process (named the SIMPLE-slip method) where some simplifications are assumed at the wall, and also (2) a slip formulation where the complete stress tensor at the wall is taken into account. Analytical and semi-analytical solutions are also provided for the fully developed flow between parallel plates of viscoelastic fluids, assuming Thomson and Troian and Lau and Schowalter non-linear wall slip models. For verification purposes, the numerical results were compared with the analytical solution for fully developed slip-flow in a planar channel using two non-linear slip models. Simulations were carried out in a classical benchmark problem in computational rheology, the viscoelastic fluid flow in a slip-stick geometry, aiming to identify the influence of slip intensity on the flow patterns, velocity, and stress growth at the singularity region. | |
dc.language.iso | eng | |
dc.relation | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/P2020|COMPETE - Projetos em Todos os Domínios Científicos/PTDC/EMS-ENE/3362/2014 - POCI-01-0145-FEDER-016665/Aproximações multi-escala para moldação por injeção de materiais plásticos/MOLDPRO | |
dc.rights | restrictedAccess | |
dc.subject | Ciências da engenharia e tecnologias | |
dc.subject | Engineering and technology | |
dc.title | A numerical and theoretical study on viscoelastic fluid slip flows | |
dc.type | Artigo em Revista Científica Internacional | |
dc.contributor.uporto | Faculdade de Engenharia | |
dc.identifier.doi | 10.1063/1.4983062 | |
dc.identifier.authenticus | P-00M-WPV | |
dc.subject.fos | Ciências da engenharia e tecnologias | |
dc.subject.fos | Engineering and technology | |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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201053.pdf Restricted Access | artigo original publicado | 2.37 MB | Adobe PDF | Request a copy from the Author(s) |
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