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Article

Study of Local Inertial Focusing Conditions for Spherical Particles in Asymmetric Serpentines

Física i Cristal∙lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMaS, Departament Química Física i Inorgànica, Campus Sescelades, Universitat Rovira i Virgili, E-43007 Tarragona, Spain
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Received: 13 November 2019 / Revised: 16 December 2019 / Accepted: 17 December 2019 / Published: 20 December 2019
Inertial focusing conditions of fluorescent polystyrene spherical particles are studied at the pointwise level along their pathlines. This is accomplished by an algorithm that calculates a degree of spreading function of the particles’ trajectories taking streaklines images as raw data. Different confinement ratios of the particles and flow rates are studied and the results are presented in state diagrams showing the focusing degree of the particles in terms of their position within a curve of an asymmetric serpentine and the applied flow rate. In addition, together with numerical simulation results, we present empirical evidence that the preferred trajectories of inertially focused spheres are contained within Dean vortices’ centerlines. We speculate about the existence of a new force, never postulated before, to explain this fact. View Full-Text
Keywords: inertial focusing; serpentine; Dean; inertial force; shear gradient-induced; wall effect; vortex inertial focusing; serpentine; Dean; inertial force; shear gradient-induced; wall effect; vortex
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MDPI and ACS Style

Pedrol, E.; Massons, J.; Díaz, F.; Aguiló, M. Study of Local Inertial Focusing Conditions for Spherical Particles in Asymmetric Serpentines. Fluids 2020, 5, 1. https://doi.org/10.3390/fluids5010001

AMA Style

Pedrol E, Massons J, Díaz F, Aguiló M. Study of Local Inertial Focusing Conditions for Spherical Particles in Asymmetric Serpentines. Fluids. 2020; 5(1):1. https://doi.org/10.3390/fluids5010001

Chicago/Turabian Style

Pedrol, Eric, Jaume Massons, Francesc Díaz, and Magdalena Aguiló. 2020. "Study of Local Inertial Focusing Conditions for Spherical Particles in Asymmetric Serpentines" Fluids 5, no. 1: 1. https://doi.org/10.3390/fluids5010001

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