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Updated: Jun 5, 2026

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
Published on: February 22, 2018
Irreversibility and chaos: role of long-range hydrodynamic interactions in sheared suspensions
Bloen Metzger1, Jason E Butler
1IUSTI-CNRS UMR 6595, Polytech'Marseille, 13453 Marseille Cedex 13, France.
Abstract:
Non-Brownian particles suspended in an oscillatory shear flow are studied numerically. In these systems it is often assumed that chaos (due to the long-range nature of the hydrodynamic interaction between particles) plus noise (contact or roughness) lead to irreversible behavior. However, we demonstrate that the long-range hydrodynamic interactions are not a source, nor even a magnifier, of irreversibility when coupled with nonhydrodynamic interactions. Additionally, analysis reveals that the apparent anisotropy of the particle diffusion is due to coupling of the shear flow and transverse diffusion.
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