Dynamics of shear-induced migration of spherical particles in pipe flow

ORAL

Abstract

We study the large-oscillation flow of a concentrated suspension in a pipe. Particle volume fraction and particle velocity are examined through refractive index matching techniques. The particles are seen to migrate toward the center of the pipe, i.e. from the region of high to low shear-rate. The dynamics of the shear-induced migration process is analyzed and in particular compared to the prediction of the suspension balance model using realistic rheological laws.

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Authors

  • Elisabeth Guazzelli

    Aix Marseille University, CNRS, IUSTI UMR 7343

  • Braden Snook

    Aix Marseille University, CNRS, IUSTI UMR 7343 and Department of Chemical Engineering, University of Florida, University of Florida; Aix-Marseille Universite

  • Jason Butler

    Department of Chemical Engineering, University of Florida, University of Florida