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Clogging in constricted suspension flows

Alvaro Marin, Henri Lhuissier, Massimiliano Rossi, and Christian J. Kähler
Phys. Rev. E 97, 021102(R) – Published 7 February 2018
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Abstract

The flow of a charged-stabilized suspension through a single constricted channel is studied experimentally by tracking the particles individually. Surprisingly, the behavior is found to be qualitatively similar to that of inertial dry granular systems: For small values of the neck-to-particle size ratio (D/d<3), clogs form randomly as arches of the particle span the constriction. The statistics of the clogging events are Poissonian as reported for granular systems and agree for moderate particle volume fraction (ϕ20%) with a simple stochastic model for the number of particles at the neck. For larger neck sizes (D/d>3), even at the largest ϕ(60%) achievable in the experiments, an uninterrupted particle flow is observed, which resembles that of an hourglass. This particularly small value of D/d(3) at the transition to a practically uninterrupted flow is attributed to the low effective friction between the particles, achieved by the particle's functionalization and lubrication.

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  • Received 29 May 2017

DOI:https://doi.org/10.1103/PhysRevE.97.021102

©2018 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsFluid DynamicsPolymers & Soft MatterInterdisciplinary Physics

Authors & Affiliations

Alvaro Marin1, Henri Lhuissier2, Massimiliano Rossi3, and Christian J. Kähler3

  • 1Physics of Fluids, University of Twente, The Netherlands
  • 2Aix-Marseille Université, CNRS, IUSTI, Marseille, France
  • 3Institut für Strömungsmechanik und Aerodynamik, Bundeswehr University Munich, Munich, Germany

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Issue

Vol. 97, Iss. 2 — February 2018

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