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Normal and oblique drop impact of yield stress fluids with thixotropic effects

dc.contributor.authorOishi, Cassio M. [UNESP]
dc.contributor.authorThompson, Roney L.
dc.contributor.authorMartins, Fernando P. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.date.accessioned2019-10-04T12:40:22Z
dc.date.available2019-10-04T12:40:22Z
dc.date.issued2019-10-10
dc.description.abstractNormal and oblique drop impact on a solid surface is numerically analysed for yield stress fluids. A rich diversity of results are generated as a consequence of the exploration of the inertial, elastic, plastic and thixotropic features of the process, as well as the inclination of the solid surface. We show that drops of more thixotropic fluids have a higher tendency to bounce in the normal impact, and to roll or to bounce in the case of an oblique drop impact. Concerning elasticity, we found a critical value for the elastic Ohnesorge number above which no bouncing takes place. Experimental findings such as the fact that the stored energy due to the elasticity of the fluid drop plays a role similar to the stored energy of an interfacial nature in inelastic fluid drops are corroborated in the present study.en
dc.description.affiliationUniv Estadual Paulista, Dept Matemat & Comp, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUniv Fed Rio de Janeiro, Dept Mech Engn, Ctr Tecnol, COPPE,Ilha do Fundao, BR-24210240 Rio De Janeiro, RJ, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Matemat & Comp, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/07375-0
dc.description.sponsorshipIdCNPq: 309004/2014-4
dc.format.extent642-679
dc.identifierhttp://dx.doi.org/10.1017/jfm.2019.541
dc.identifier.citationJournal Of Fluid Mechanics. New York: Cambridge Univ Press, v. 876, p. 642-679, 2019.
dc.identifier.doi10.1017/jfm.2019.541
dc.identifier.issn0022-1120
dc.identifier.urihttp://hdl.handle.net/11449/185988
dc.identifier.wosWOS:000478866000001
dc.language.isoeng
dc.publisherCambridge Univ Press
dc.relation.ispartofJournal Of Fluid Mechanics
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectdrops
dc.subjectnon-Newtonian flows
dc.subjectinterfacial flows (free surface)
dc.titleNormal and oblique drop impact of yield stress fluids with thixotropic effectsen
dc.typeArtigo
dcterms.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676
dcterms.rightsHolderCambridge Univ Press
unesp.author.lattes8671745801940831[1]
unesp.author.orcid0000-0002-0904-6561[1]
unesp.departmentMatemática e Computação - FCTpt

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