Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/105596
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DC Field | Value | Language |
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dc.creator | R. A. Figueiredo | |
dc.creator | C. M. Oishi | |
dc.creator | A. M. Afonso | |
dc.creator | I. V. M. Tasso | |
dc.creator | J. A. Cuminato | |
dc.date.accessioned | 2022-09-08T21:08:08Z | - |
dc.date.available | 2022-09-08T21:08:08Z | - |
dc.date.issued | 2016 | |
dc.identifier.issn | 0301-9322 | |
dc.identifier.other | sigarra:160405 | |
dc.identifier.uri | https://hdl.handle.net/10216/105596 | - |
dc.description.abstract | In this work a new two-phase solver is presented and described, with a particular interest in the solution of highly elastic flows of viscoelastic fluids. The proposed code is based on a combination of classical Volume-of-Fluid and Continuum Surface Force methods, along with a generic kernel-conformation tensor transformation to represent the rheological characteristics of the (multi)-fluid phases. Benchmark test problems are solved in order to assess the numerical accuracy of distinct levels of physical complexities; such as the interface representation, the influence of advection schemes, the influence of surface tension and the role of fluid rheology. In order to demonstrate the new features and capabilities of the solver in simulating of complex fluids in transient regime, we have performed a set of simulations for the problem of a rotating rod inserted into a container with a viscoelastic fluid, known as the Weissenberg or Rod Climbing effect. Firstly, our results are compared with numerical and experimental data from the literature for low angular velocities. Secondly, we have presented results obtained for high angular velocities (high elasticity) using the Oldroyd-B model which displayed very, elevated climbing heights. Furthermore, above a critical value for the angular velocity, it was observed the onset of elastic instabilities driven by the combination of elastic stresses, interfacial curvature and secondary flows, that to the authors best knowledge, were not yet reported in the literature. | |
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 two-phase solver for complex fluids: Studies of the Weissenberg effect | |
dc.type | Artigo em Revista Científica Internacional | |
dc.contributor.uporto | Faculdade de Engenharia | |
dc.identifier.doi | 10.1016/j.ijmultiphaseflow.2016.04.014 | |
dc.identifier.authenticus | P-00K-NKK | |
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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160405.pdf Restricted Access | 3.96 MB | Adobe PDF | Request a copy from the Author(s) |
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