Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/105611
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dc.creatorFerras, LL
dc.creatorAfonso, AM
dc.creatorAlves, MA
dc.creatorNobrega, JM
dc.creatorF. T. Pinho
dc.date.accessioned2019-02-07T15:55:18Z-
dc.date.available2019-02-07T15:55:18Z-
dc.date.issued2016
dc.identifier.issn1070-6631
dc.identifier.othersigarra:160406
dc.identifier.urihttps://repositorio-aberto.up.pt/handle/10216/105611-
dc.description.abstractIn this work, we present a series of solutions for combined electro-osmotic and pressure-driven flows of viscoelastic fluids in microchannels. The solutions are semi-analytical, a feature made possible by the use of the Debye-Huckel approximation for the electrokinetic fields, thus restricted to cases with small electric double-layers, in which the distance between the microfluidic device walls is at least one order of magnitude larger than the electric double-layer thickness. To describe the complex fluid rheology, several viscoelastic differential constitutive models were used, namely, the simplified Phan-Thien-Tanner model with linear, quadratic or exponential kernel for the stress coefficient function, the Johnson-Segalman model, and the Giesekus model. The results obtained illustrate the effects of the Weissenberg number, the Johnson-Segalman slip parameter, the Giesekus mobility parameter, and the relative strengths of the electro-osmotic and pressure gradient-driven forcings on the dynamics of these viscoelastic flows. Published by AIP Publishing.
dc.language.isoeng
dc.relationinfo:eu-repo/grantAgreement/FCT - Fundação para a Ciência e 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.rightsrestrictedAccess
dc.titleElectro-osmotic and pressure-driven flow of viscoelastic fluids in microchannels: Analytical and semi-analytical solutions
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.identifier.doi10.1063/1.4962357
dc.identifier.authenticusP-00M-4VH
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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