Figueiredo, R. A.Oishi, C. M. [UNESP]Cuminato, J. A.Alves, M. A.2014-05-272014-05-272013-05-01Journal of Non-Newtonian Fluid Mechanics, v. 195, p. 88-98.0377-0257http://hdl.handle.net/11449/75225In this paper we present a finite difference MAC-type approach for solving three-dimensional viscoelastic incompressible free surface flows governed by the eXtended Pom-Pom (XPP) model, considering a wide range of parameters. The numerical formulation presented in this work is an extension to three-dimensions of our implicit technique [Journal of Non-Newtonian Fluid Mechanics 166 (2011) 165-179] for solving two-dimensional viscoelastic free surface flows. To enhance the stability of the numerical method, we employ a combination of the projection method with an implicit technique for treating the pressure on the free surfaces. The differential constitutive equation of the fluid is solved using a second-order Runge-Kutta scheme. The numerical technique is validated by performing a mesh refinement study on a pipe flow, and the numerical results presented include the simulation of two complex viscoelastic free surface flows: extrudate-swell problem and jet buckling phenomenon. © 2013 Elsevier B.V.88-98engFinite difference methodFree surface flowsThree dimensionalViscoelastic flowXPP modelFree-surface flowImplicit techniquesIncompressible free surface flowsNon-Newtonian fluid mechanicsNumerical formulationNumerical techniquesViscoelastic flowsCrystallographyFluid mechanicsNon Newtonian liquidsNumerical methodsRunge Kutta methodsSurfacesArtigo10.1016/j.jnnfm.2013.01.004WOS:000318323200009Acesso restrito2-s2.0-84875243673