Anisotropic particles focusing effect in complex flows
Name
PhysRevFluids.7.084503.pdf
Size
1.75 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Atis, Séverine
Leclair, Matthieu
Sapsis, Themistoklis P.
Peacock, Thomas
Date Issued
August 26, 2022
Journal
Physical Review Fluids
Publisher
American Physical Society
Citation
Atis, Séverine, Leclair, Matthieu, Sapsis, Themistoklis P. and Peacock, Thomas. 2022. "Anisotropic particles focusing effect in complex flows." Physical Review Fluids, 7 (8).
Version
Final published version
Abstract
Finite-size effects can lead neutrally buoyant particles to exhibit different dynamics than tracer particles, and can alter their transport properties in fluid flows. Here we investigate the effect of the particle's shape on their dispersion in two-dimensional complex flows. Combining numerical simulations with laboratory experiments, we show that particles with isotropic and anisotropic shapes exhibit different Lagrangian coherent structures, resulting in distinct dispersion phenomena within a given flow field. Experiments with rod-shaped particles show a focusing effect in the vicinity of vortex cores. We present a simple model that describes the dynamics of neutrally buoyant ellipsoidal particles in two-dimensional flow and show that particle aspect ratio and orientation-dependent forces can generate clustering phenomena in vortices.
Subjects
Fluid Flow and Transfer Processes
Modeling and Simulation
Computational Mechanics
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/physrevfluids.7.084503
