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dc.contributor.authorSyrakos, A.en
dc.contributor.authorGeorgiou, Georgios C.en
dc.contributor.authorAlexandrou, Andreas N.en
dc.creatorSyrakos, A.en
dc.creatorGeorgiou, Georgios C.en
dc.creatorAlexandrou, Andreas N.en
dc.date.accessioned2019-12-02T10:38:27Z
dc.date.available2019-12-02T10:38:27Z
dc.date.issued2014
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/57670
dc.description.abstractWe study the flow of a thixotropic fluid around a cylinder. The rheology of the fluid is described by means of a structural viscoplastic model based on the Bingham constitutive equation, regularised using the Papanastasiou regularisation. The yield stress is assumed to vary linearly with the structural parameter, which varies from zero (completely broken structure) to one (fully developed skeleton structure), following a first-order rate equation which accounts for material structure break-down and build-up. The results were obtained numerically using the Finite Element Method. Simulations were performed for a moderate Reynolds number of 45, so that flow recirculation is observed behind the cylinder, but vortex shedding does not occur. The effects of the Bingham number and of the thixotropy parameters are studied. The results show that the viscous character of the flow can be controlled within certain limits through these parameters, despite the fact that the Reynolds number is fixed. © 2014 Elsevier B.V.en
dc.sourceJournal of Non-Newtonian Fluid Mechanicsen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84988255571&doi=10.1016%2fj.jnnfm.2014.08.008&partnerID=40&md5=bb60d72dbc1864b30390a8806f04f4c7
dc.subjectColloidsen
dc.subjectFinite element methoden
dc.subjectReynolds numberen
dc.subjectStructural parameteren
dc.subjectThixotropyen
dc.subjectYield stressen
dc.subjectViscoplasticityen
dc.subjectCylinders (shapes)en
dc.subjectFirst order rate equationen
dc.subjectFlow past a cylinderen
dc.subjectMaterial structureen
dc.subjectModerate Reynolds numbersen
dc.subjectPapanastasiou regularisationen
dc.subjectRegularisationen
dc.subjectViscoplastic modelsen
dc.titleThixotropic flow past a cylinderen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/j.jnnfm.2014.08.008
dc.description.volume220
dc.description.startingpage44
dc.description.endingpage56
dc.author.facultyΣχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :2</p>en
dc.source.abbreviationJ.Non-Newton.Fluid Mech.en
dc.contributor.orcidSyrakos, A. [0000-0002-3472-8580]
dc.contributor.orcidGeorgiou, Georgios C. [0000-0002-7451-224X]
dc.gnosis.orcid0000-0002-3472-8580
dc.gnosis.orcid0000-0002-7451-224X


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