Poole, RJ ORCID: 0000-0001-6686-4301, Lindner, A and Alves, MA
(2013)
Viscoelastic secondary flows in serpentine channels.
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 201.
pp. 10-16.
Text
Poole_et_al.pdf - Unspecified Download (1MB) |
Abstract
We report the results of a detailed numerical investigation of inertialess viscoelastic fluid flow through three-dimensional serpentine (or wavy) channels of varying radius of curvature and aspect ratio using the Oldroyd-B model. The results reveal the existence of a secondary flow which is absent for the equivalent Newtonian fluid flow. The secondary flow arises due to the curvature of the geometry and the streamwise first normal-stress differences generated in the flowing fluid and can be thought of as the viscoelastic equivalent of Dean vortices. The effects of radius of curvature, aspect ratio and solvent-to-total viscosity ratio on the strength of the secondary flow are investigated. The secondary flow strength is shown to be a function of a modified Deborah number over a wide parameter range. © 2013 The Authors.
Item Type: | Article |
---|---|
Additional Information: | ## TULIP Type: Articles/Papers (Journal) ## |
Uncontrolled Keywords: | Finite volume method, Oldroyd-B model, UCM model, Secondary flow, Serpentine channel |
Depositing User: | Symplectic Admin |
Date Deposited: | 12 Apr 2016 11:22 |
Last Modified: | 16 Dec 2022 05:24 |
DOI: | 10.1016/j.jnnfm.2013.07.001 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3000442 |