Numerical simulations of the separation of elastic particles in a T-shaped bifurcation

被引：6

作者：

Trofa, Marco ^{[1
,2
]}

Villone, Massimiliano Maria ^{[2
]}

D'Avino, Gaetano ^{[1
]}

Hulsen, Martien A. ^{[3
]}

Netti, Paolo Antonio ^{[1
,2
]}

Maffettone, Pier Luca ^{[1
]}

机构：

[1] Univ Naples Federico II, Dipartimento Ingn Chim Mat & Prod Ind, Ple Tecchio 80, I-80125 Naples, Italy

[2] Ist Italiano Tecnol, Ctr Adv Biomat Healthcare CRIB, Largo Barsanti & Matteucci 53, I-80125 Naples, Italy

[3] Eindhoven Univ Technol, Dept Mech Engn, POB 513, NL-5600 MB Eindhoven, Netherlands

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 2016年 / 233卷

关键词：

Suspension; Separation; Bifurcation; T-shaped channel; Elastic particle; Direct numerical simulations; LAGRANGIAN-EULERIAN TECHNIQUE; MICROFLUIDIC DEVICES; VISCOELASTIC FLUIDS; FLOW; CELLS; MOTION; DEFORMATION; SYSTEMS;

D O I：

10.1016/j.jnnfm.2016.01.015

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this work, we study the dynamics of an elastic particle suspended in an inertialess Newtonian fluid flowing through a channel with an orthogonal side branch (asymmetric T-shaped bifurcation) by means of 2D Arbitrary Lagrangian Eulerian (ALE) Finite Element Method (FEM) direct numerical simulations. The simulations show that, when the fluid is equally partitioned in the two downstream branches and the particle starts from the inflow channel centerline, a sufficiently deformable particle is deviated into the 'side' branch, at variance with a rigid particle, which remains in the 'main' outlet. The effects of the elastic capillary number and the confinement ratio on the particle trajectory and deformation near the bifurcation are investigated. We discuss how this device can be exploited for separating particles based on their elasticity. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：75 / 84

页数：10

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