Título: Journal of Non-Newtonian Fluid MechanicsImportada do Authenticus Pesquisar Publicações da Revista

Vol. 195

Páginas: 88-98

ISSN: 0377-0257

Editora: Elsevier

ISI Web of Knowledge - 13 Citações

ISI Web of Science

Scopus - 15 Citações

INSPEC

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

ID Authenticus: P-005-15X

DOI: 10.1016/j.jnnfm.2013.01.004

Abstract (EN): In 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11