Numerical simulation of viscoelastic contraction flows

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2003

Autores

M. A. Alves (Autor) FEUP; P. J. Oliveira (Autor) Outra; F. T. Pinho (Autor) FEUP

Ata de Conferência Internacional

Título: COMPUTATIONAL FLUID AND SOLID MECHANICS 2003, VOLS 1 AND 2, PROCEEDINGS

Páginas: 826-829

2nd MIT Conference on Computational Fluid and Solid Mechanics

CAMBRIDGE, MA, JUN 17-20, 2003

Indexação

ISI Proceedings

ISI Web of Knowledge - 12 Citações

Scopus - 15 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-000-JC1

DOI: 10.1016/b978-008044046-0.50201-3

Abstract (EN): In this work we present numerical results obtained with a finite volume method for the creeping flow of viscoelastic fluids in both axisymmetric and planar 4: 1 contractions. Two theological equations are considered, namely the constant-viscosity Oldroyd-B and the shear-thinning Phan-Thien/Tanner (PTT) models. Accurate solutions are presented over a wide range of the Deborah number (a measure of the elasticity of the flow) extending the attainable values of previous studies [1]. Vortex enhancement was observed for the axisymmetric contraction, with both theological models, while for the planar contraction vortex enhancement is only observed for the shear-thinning PTT model. In the latter geometry, vortex reduction and the appearance of a small lip vortex is predicted for the constant-viscosity Oldroyd-B fluid.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4