dc.creatorFigueiredo, Rafael Alves
dc.creatorOishi, Cassio Machiaveli
dc.creatorCuminato, José Alberto
dc.creatorAzevedo, José Manuel Cruz
dc.creatorAfonso, Alexandre Miguel Prior
dc.creatorAlves, Manuel António Moreira
dc.date.accessioned2015-03-11T18:40:51Z
dc.date.accessioned2018-07-04T17:03:52Z
dc.date.available2015-03-11T18:40:51Z
dc.date.available2018-07-04T17:03:52Z
dc.date.created2015-03-11T18:40:51Z
dc.date.issued2014-07-20
dc.identifierWorld Congress on Computational Mechanics, 11; European Conference on Computational Mechanics, 5; European Conference on Computational Fluid Dynamics, 6, 2014, Barcelona.
dc.identifier9788494284472
dc.identifierhttp://www.producao.usp.br/handle/BDPI/48483
dc.identifierhttp://www.wccm-eccm-ecfd2014.org/frontal/Ebook.asp
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1644156
dc.description.abstractThis work presents a numerical investigation of three dimensional viscoelastic free surface flows. In particular, using two different numerical methodologies, we have simulated a typical free-surface benchmark flow problem: the impact of a viscoelastic fluid droplet with a rigid boundary. The numerical method was recently proposed by Figueiredo et al. [1] and has been implemented in a in-house viscoelastic flow solver. In this methodology, a finite difference scheme is adopted combining the Marker-And-Cell (MAC) method with a Front-Tracking strategy. In order to preserve mass conservation properties for transient viscoelastic fluid flows, we have modified the methodology in [1] to include an improvement on the MAC discretization of the velocity boundary conditions at free-surfaces. The code is verified by solving the drop impact problem for a Newtonian fluid. After this verification, we employ the Oldroyd-B model to assess the differences between the methodologies, and compare our results with the ones in the literature. Finally, a detailed study of the influence of the relevant rheological parameters of the non-linear viscoelastic models (Giesekus and XPP) is reported, regarding the deformation and spreading of the viscoelastic fluid drop after impacting on a rigid surface.
dc.languageeng
dc.publisherInternational Association for Computational Mechanics (IACM)
dc.publisherEuropean Community on Computational Methods in Applied Sciences (ECCOMAS)
dc.publisherBarcelona
dc.relationWorld Congress on Computational Mechanics, 11.
dc.rightsCopyright International Center for Numerical Methods in Engineering (CIMNE)
dc.rightsopenAccess
dc.subjectFree surface flows
dc.subjectViscoelastic models
dc.subjectNumerical simulation
dc.subjectImpacting drop problem
dc.titleNumerical investigation of three dimensional viscoelastic free surface flows: impacting drop problem
dc.typeActas de congresos


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