Numerical simulation of viscoelastic contraction flows

• Type: Article in International Conference Proceedings Book
• Date: 2003

Authors

M. A. Alves (Author) FEUP; P. J. Oliveira (Author) Other; F. T. Pinho (Author) FEUP

Conference proceedings International

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

Pages: 826-829

2nd MIT Conference on Computational Fluid and Solid Mechanics

CAMBRIDGE, MA, JUN 17-20, 2003

Indexing

ISI Proceedings

ISI Web of Knowledge - 12 Citations

Scopus - 15 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4