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Two-Way Coupling Fluid-Structure Interaction (FSI) Approach to Inertial Focusing Dynamics under Dean Flow Patterns in Asymmetric Serpentines

Departament de Química Física i Inorgànica, Física i Cristal∙lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMaS, Universitat Rovira i Virgili, Campus Sescelades, E-43007 Tarragona, Spain
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Fluids 2018, 3(3), 62; https://doi.org/10.3390/fluids3030062
Received: 9 August 2018 / Revised: 23 August 2018 / Accepted: 23 August 2018 / Published: 31 August 2018
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. View Full-Text
Keywords: inertial focusing; dean flow; serpentine; fluid-structure interaction (FSI); two-way coupling inertial focusing; dean flow; serpentine; fluid-structure interaction (FSI); two-way coupling
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Pedrol, E.; Massons, J.; Díaz, F.; Aguiló, M. Two-Way Coupling Fluid-Structure Interaction (FSI) Approach to Inertial Focusing Dynamics under Dean Flow Patterns in Asymmetric Serpentines. Fluids 2018, 3, 62.

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