Go to:
Logótipo
Comuta visibilidade da coluna esquerda
Você está em: Start > Publications > View > Viscoelastic fluid flow through 3D square-square expansions
Publication

Publications

Viscoelastic fluid flow through 3D square-square expansions

Title
Viscoelastic fluid flow through 3D square-square expansions
Type
Article in International Conference Proceedings Book
Year
2008
Authors
P. C. Sousa
(Author)
Other
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page View ORCID page
P. M. Coelho
(Author)
FEUP
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications Without AUTHENTICUS View ORCID page
M. S. N. Oliveira
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
M. A. Alves
(Author)
FEUP
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page Without ORCID
Conference proceedings International
Pages: 276-278
15th International Congress on Rheology/80th Annual Meeting of the Society-of-Rheology
Monterey, CA, AUG 03-08, 2008
Indexing
Scientific classification
FOS: Natural sciences > Physical sciences
Other information
Authenticus ID: P-004-52P
Abstract (EN): In this work we present an experimental study of the 3D laminar flow of Newtonian and Boger fluids through square-square expansions with expansion ratios of 1:2.4, 1:4, 1:8 and 1:12. Visualizations of the flow patterns were performed using streak line photography and the velocity field of the flow was measured in detail using Particle Image Velocimetry (PIV). The experimental results obtained with the Newtonian fluid are compared with numerical predictions. The numerical code used is based on a Finite-Volume method and an excellent agreement is found between experimental and numerical results. For all expansion ratios studied, a Moffatt corner vortex is observed downstream of the expansion and an increase in the flow inertia leads to an enhancement of the vortex size. On the other hand, the viscoelastic fluid flow also reveals the existence of a corner vortex downstream of the expansion, which decreases in size and strength when the Deborah number is increased. The vortices in square-square expansion flows exhibit a three-dimensional structure evidenced by a helical flow, which is well predicted by numerical simulation in the Newtonian fluid flow case.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 3
Documents
We could not find any documents associated to the publication with allowed access.
Recommend this page Top
Copyright 1996-2025 © Faculdade de Direito da Universidade do Porto  I Terms and Conditions  I Acessibility  I Index A-Z
Page created on: 2025-07-17 at 07:59:35 | Privacy Policy | Personal Data Protection Policy | Whistleblowing