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Breakup of a particulate suspension jet

J. Château and H. Lhuissier*

  • Aix Marseille Université, CNRS, IUSTI, Marseille, France

  • *henri.lhuissier@univ-amu.fr
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Phys. Rev. Fluids 4, 012001(R) – Published 10 January, 2019

DOI: https://doi.org/10.1103/PhysRevFluids.4.012001

Abstract

As viscosity is increased, a liquid capillary jet accelerated by gravity stretches over increasingly large distances before eventually breaking up. This Newtonian behavior is profoundly altered for particulate suspensions. Adding solid particles to a liquid, which increases the effective viscosity, can paradoxically shorten the jet considerably [as first reported by Furbank and Morris, Phys. Fluids 16, 1777 (2004)]. This apparent contradiction is rationalized by considering finite-size effects occurring at the scale of a few particles. A model is presented which captures the breakup length of suspension jets observed experimentally for a broad range of liquid viscosities, particle sizes, and extrusion velocities of the jet and recovers the Newtonian case for vanishing particle sizes. These results can be readily extended to any stretched jet configuration and potentially to other fluid media having a granularity.

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References (31)

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Outline

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Phys. Rev. Fluids 4, 012001(R)– Published 10 January, 2019
  • Received 27 May 2018
  • Revised 17 August 2018
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