Next Article in Journal
Stenosis Indicators Applied to Patient-Specific Renal Arteries without and with Stenosis
Next Article in Special Issue
DEM/CFD Simulations of a Pseudo-2D Fluidized Bed: Comparison with Experiments
Previous Article in Journal
Steady Two-Dimensional Free-Surface Flow Past Disturbances in an Open Channel: Solutions of the Korteweg–De Vries Equation and Analysis of the Weakly Nonlinear Phase Space
Previous Article in Special Issue
Encapsulation of Droplets Using Cusp Formation behind a Drop Rising in a Non-Newtonian Fluid
Article Menu

Export Article

Open AccessArticle
Fluids 2019, 4(1), 25;

A Numerical Study of Particle Migration and Sedimentation in Viscoelastic Couette Flow

Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
Author to whom correspondence should be addressed.
Received: 16 January 2019 / Revised: 30 January 2019 / Accepted: 2 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Drop, Bubble and Particle Dynamics in Complex Fluids)
Full-Text   |   PDF [1509 KB, uploaded 15 February 2019]   |  


In this work, a systematic investigation of the migration of sedimenting particles in a viscoelastic Couette flow is presented, using finite element 3D simulations. To this end, a novel computational approach is presented, which allows us to simulate a periodic configuration of rigid spherical particles accurately and efficiently. To study the different contributions to the particle migration, we first investigate the migration of particles sedimenting near the inner wall, without an externally-imposed Couette flow, followed by the migration of non-sedimenting particles in an externally-imposed Couette flow. Then, both flows are combined, i.e., sedimenting particles with an externally-imposed Couette flow, which was found to increase the migration velocity significantly, yielding migration velocities that are higher than the sum of the combined flows. It was also found that the trace of the conformation tensor becomes asymmetric with respect to the particle center when the particle is initially placed close to the inner cylinder. We conclude by investigating the sedimentation velocity with an imposed orthogonal shear flow. It is found that the sedimentation velocity can be both higher or lower then the Newtonian case, depending on the rheology of the suspending fluid. Specifically, a shear-thinning viscosity is shown to play an important role, which is in-line with previously-published results. View Full-Text
Keywords: migration; sedimentation; viscoelasticity migration; sedimentation; viscoelasticity

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Spanjaards, M.M.A.; Jaensson, N.O.; Hulsen, M.A.; Anderson, P.D. A Numerical Study of Particle Migration and Sedimentation in Viscoelastic Couette Flow. Fluids 2019, 4, 25.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
Fluids EISSN 2311-5521 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top