Transient shear banding in time-dependent fluids

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorIlla, Xavier
dc.contributor.authorPuisto, Antti
dc.contributor.authorLehtinen, Arttu
dc.contributor.authorMohtaschemi, Mikael
dc.contributor.authorAlava, Mikko J.
dc.contributor.departmentUniversity of Barcelona
dc.contributor.departmentDepartment of Applied Physics
dc.date.accessioned2018-05-22T14:42:48Z
dc.date.available2018-05-22T14:42:48Z
dc.date.issued2013-02-22
dc.description.abstractWe study the dynamics of shear-band formation and evolution using a simple rheological model. The description couples the local structure and viscosity to the applied shear stress. We consider in detail the Couette geometry, where the model is solved iteratively with the Navier-Stokes equation to obtain the time evolution of the local velocity and viscosity fields. It is found that the underlying reason for dynamic effects is the nonhomogeneous shear distribution, which is amplified due to a positive feedback between the flow field and the viscosity response of the shear thinning fluid. This offers a simple explanation for the recent observations of transient shear banding in time-dependent fluids. Extensions to more complicated rheological systems are considered.en
dc.description.versionPeer revieweden
dc.format.extent1-5
dc.format.mimetypeapplication/pdf
dc.identifier.citationIlla , X , Puisto , A , Lehtinen , A , Mohtaschemi , M & Alava , M J 2013 , ' Transient shear banding in time-dependent fluids ' , Physical Review E , vol. 87 , no. 2 , 022307 , pp. 1-5 . https://doi.org/10.1103/PhysRevE.87.022307en
dc.identifier.doi10.1103/PhysRevE.87.022307
dc.identifier.issn1539-3755
dc.identifier.issn1550-2376
dc.identifier.otherPURE UUID: 94f4b4ab-8ecf-4f78-a3a4-7ce9050ede68
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/94f4b4ab-8ecf-4f78-a3a4-7ce9050ede68
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=84874510057&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/14489398/PhysRevE.87.022307.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/31050
dc.identifier.urnURN:NBN:fi:aalto-201805222490
dc.language.isoenen
dc.relation.ispartofseriesPHYSICAL REVIEW Een
dc.relation.ispartofseriesVolume 87, issue 2en
dc.rightsopenAccessen
dc.titleTransient shear banding in time-dependent fluidsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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