Particle migration in planar Couette-Poiseuille flows of concentrated suspensions

Ilyoung Kwon, Hyun Wook Jung, Jae Chun Hyun, Myung Suk Chun, Byoungjin Chun

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Particle migration phenomena in parallel slit channel flows of concentrated suspensions with asymmetric velocity profiles, which are governed by planar Couette-Poiseuille (C-P) flow conditions, are numerically investigated employing the diffusive flux model (DFM) via the finite volume method. The particle distributions predicted by DFM are confirmed by comparing quantitatively with those by the reported experimental results and the lattice Boltzmann method. The main factors governing the migration dynamics in the DFM, such as particle size, concentration, and flow length from an inlet of the channel, are effectively unified into a nondimensional length element. The effects of the asymmetric C-P flow fields on particle dynamics are clarified by the evolution of the concentration distribution along the nondimensional length element under a different asymmetric velocity and initial concentration conditions. From scale analysis, this asymmetric distribution is analytically interpreted by adopting a concept of the effective diffusion gap. It is substantiated that the continuum-based analysis of concentrated suspension systems reliably reflects the migration phenomenon by collisions between individual particles, focusing on the shear-induced migration process, even in the asymmetric flow conditions.

Original languageEnglish
Pages (from-to)419-435
Number of pages17
JournalJournal of Rheology
Volume62
Issue number2
DOIs
Publication statusPublished - 2018 Mar 1

Fingerprint

laminar flow
Suspensions
Fluxes
Finite volume method
Channel flow
Flow fields
Particle size
finite volume method
channel flow
slits
flow distribution
velocity distribution
shear
continuums
collisions

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Particle migration in planar Couette-Poiseuille flows of concentrated suspensions. / Kwon, Ilyoung; Jung, Hyun Wook; Hyun, Jae Chun; Chun, Myung Suk; Chun, Byoungjin.

In: Journal of Rheology, Vol. 62, No. 2, 01.03.2018, p. 419-435.

Research output: Contribution to journalArticle

Kwon, Ilyoung ; Jung, Hyun Wook ; Hyun, Jae Chun ; Chun, Myung Suk ; Chun, Byoungjin. / Particle migration in planar Couette-Poiseuille flows of concentrated suspensions. In: Journal of Rheology. 2018 ; Vol. 62, No. 2. pp. 419-435.
@article{066b2b2648c64bbc80af107b79e10625,
title = "Particle migration in planar Couette-Poiseuille flows of concentrated suspensions",
abstract = "Particle migration phenomena in parallel slit channel flows of concentrated suspensions with asymmetric velocity profiles, which are governed by planar Couette-Poiseuille (C-P) flow conditions, are numerically investigated employing the diffusive flux model (DFM) via the finite volume method. The particle distributions predicted by DFM are confirmed by comparing quantitatively with those by the reported experimental results and the lattice Boltzmann method. The main factors governing the migration dynamics in the DFM, such as particle size, concentration, and flow length from an inlet of the channel, are effectively unified into a nondimensional length element. The effects of the asymmetric C-P flow fields on particle dynamics are clarified by the evolution of the concentration distribution along the nondimensional length element under a different asymmetric velocity and initial concentration conditions. From scale analysis, this asymmetric distribution is analytically interpreted by adopting a concept of the effective diffusion gap. It is substantiated that the continuum-based analysis of concentrated suspension systems reliably reflects the migration phenomenon by collisions between individual particles, focusing on the shear-induced migration process, even in the asymmetric flow conditions.",
author = "Ilyoung Kwon and Jung, {Hyun Wook} and Hyun, {Jae Chun} and Chun, {Myung Suk} and Byoungjin Chun",
year = "2018",
month = "3",
day = "1",
doi = "10.1122/1.4989416",
language = "English",
volume = "62",
pages = "419--435",
journal = "Journal of Rheology",
issn = "0148-6055",
publisher = "Society of Rheology",
number = "2",

}

TY - JOUR

T1 - Particle migration in planar Couette-Poiseuille flows of concentrated suspensions

AU - Kwon, Ilyoung

AU - Jung, Hyun Wook

AU - Hyun, Jae Chun

AU - Chun, Myung Suk

AU - Chun, Byoungjin

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Particle migration phenomena in parallel slit channel flows of concentrated suspensions with asymmetric velocity profiles, which are governed by planar Couette-Poiseuille (C-P) flow conditions, are numerically investigated employing the diffusive flux model (DFM) via the finite volume method. The particle distributions predicted by DFM are confirmed by comparing quantitatively with those by the reported experimental results and the lattice Boltzmann method. The main factors governing the migration dynamics in the DFM, such as particle size, concentration, and flow length from an inlet of the channel, are effectively unified into a nondimensional length element. The effects of the asymmetric C-P flow fields on particle dynamics are clarified by the evolution of the concentration distribution along the nondimensional length element under a different asymmetric velocity and initial concentration conditions. From scale analysis, this asymmetric distribution is analytically interpreted by adopting a concept of the effective diffusion gap. It is substantiated that the continuum-based analysis of concentrated suspension systems reliably reflects the migration phenomenon by collisions between individual particles, focusing on the shear-induced migration process, even in the asymmetric flow conditions.

AB - Particle migration phenomena in parallel slit channel flows of concentrated suspensions with asymmetric velocity profiles, which are governed by planar Couette-Poiseuille (C-P) flow conditions, are numerically investigated employing the diffusive flux model (DFM) via the finite volume method. The particle distributions predicted by DFM are confirmed by comparing quantitatively with those by the reported experimental results and the lattice Boltzmann method. The main factors governing the migration dynamics in the DFM, such as particle size, concentration, and flow length from an inlet of the channel, are effectively unified into a nondimensional length element. The effects of the asymmetric C-P flow fields on particle dynamics are clarified by the evolution of the concentration distribution along the nondimensional length element under a different asymmetric velocity and initial concentration conditions. From scale analysis, this asymmetric distribution is analytically interpreted by adopting a concept of the effective diffusion gap. It is substantiated that the continuum-based analysis of concentrated suspension systems reliably reflects the migration phenomenon by collisions between individual particles, focusing on the shear-induced migration process, even in the asymmetric flow conditions.

UR - http://www.scopus.com/inward/record.url?scp=85041011292&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85041011292&partnerID=8YFLogxK

U2 - 10.1122/1.4989416

DO - 10.1122/1.4989416

M3 - Article

VL - 62

SP - 419

EP - 435

JO - Journal of Rheology

JF - Journal of Rheology

SN - 0148-6055

IS - 2

ER -