Author, as appears in the article.: Pedrol E; Massons J; Díaz F; Aguiló M

Department: Química Física i Inorgànica

URV's Author/s: , / Aguiló Díaz, Magdalena / Masons Bosch, Jaime

Keywords: Wall effect Vortex Shear gradient-induced Serpentine Separation Rigid spheres Poiseuille flow Migration Microparticles Microfluidics Inertial force Inertial focusing Fluid Filtration Dean Cells Behavior

Abstract: © 2019 by the authors 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.

Thematic Areas: Physics, fluids & plasmas Mechanical engineering Fluid flow and transfer processes Condensed matter physics Ciencias sociales

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 23115521

Author's mail: f.diaz@urv.cat jaume.masons@urv.cat magdalena.aguilo@urv.cat

Author identifier: 0000-0003-4581-4967 0000-0003-4325-6084 0000-0001-6130-9579

Record's date: 2023-10-14

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2311-5521/5/1/1

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Fluids. 5 (1):

APA: Pedrol E; Massons J; Díaz F; Aguiló M (2020). Study of local inertial focusing conditions for spherical particles in asymmetric serpentines. Fluids, 5(1), -. DOI: 10.3390/fluids5010001

Article's DOI: 10.3390/fluids5010001

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

Publication Type: Journal Publications