Two-way coupling fluid-structure interaction (FSI) approach to inertial focusing dynamics under dean flow patterns in asymmetric serpentines

Identifier:  imarina:4862226

Handle: https://hdl.handle.net/20.500.11797/imarina4862226

Authors:  Pedrol E; Massons J; Díaz F; Aguiló M

Abstract:
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). The dynamics of a spherical particle in an asymmetric serpentine is studied by finite element method (FEM) simulations in a physically unconstrained system. The two-way coupled time dependent solutions illustrate the path of the particle along a curve where a secondary flow (Dean flow) has developed. The simulated conditions were adjusted to match those of an experiment for which particles were focused under inertial focusing conditions in a microfluidic device. The obtained rotational modes inferred the influence of the local flow around the particle. We propose a new approach to find the decoupled secondary flow contribution employing a quasi-Stokes flow.