Rheological transient effects on steady-state contraction flows

It may be assumed that the steady-state kinematics of viscoelastic contraction flows depends on the time-independent rheological properties only. This idea is supported by the large number of references explaining steady simulation results by considering only steady-state material functions. Even wi...

Full description

Saved in:
Bibliographic Details
Published in:Rheologica acta 2023-04, Vol.62 (4), p.171-181
Main Authors: Pérez-Salas, Karen Y., Sánchez, Salvador, Velasco-Segura, Roberto, Ascanio, Gabriel, Ruiz-Huerta, Leopoldo, Aguayo, Juan P.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Complex Fluids and Microfluidics
Equilibrium flow
Evolution
Food Science
Kinematics
Materials Science
Mathematical models
Mechanical Engineering
Original Contribution
Polymer Sciences
Pressure drop
Rheological properties
Rheology
Soft and Granular Matter
Steady state
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It may be assumed that the steady-state kinematics of viscoelastic contraction flows depends on the time-independent rheological properties only. This idea is supported by the large number of references explaining steady simulation results by considering only steady-state material functions. Even with numerical simulations, it would be difficult to prove such a statement wrong. However, using the Bautista-Manero-Puig class of models allows to obtain the same steady rheological response but with different transient evolution. Here, we considered two fluids, one displaying a monotonic trend towards the steady-state and the other with at least one visible overshoot in the material functions. Our results show that for the transient evolution with the overshoot fluid, a significant increase in the steady pressure drop is gathered. In addition, vortex response is quite different for the two fluids. This research gives evidence that the transient evolution in rheometrical functions has great impact on steady-state flow behavior.
ISSN:0035-4511
1435-1528
DOI:10.1007/s00397-023-01385-0