Slow viscous flows of highly concentrated suspensions - Part II: Particle migration, velocity and concentration profiles in rectangular ducts

A. Shauly*, A. Averbakh, A. Nir, R. Semiat

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The utilization of the laser-Doppler velocimetry technique in concentrated suspensions facilitated a direct measurement of particle migration velocities. Velocity measurements of dispersions at moderate and high particle concentrations, in the range of 0.3 < φs < 0.50, showed a direct connection between particle lateral migration and changes in suspension velocity profiles. The longitudinal profiles lose their Newtonian shape at high concentrations. A qualitative agreement is shown in this work between the measured lateral and longitudinal velocity profiles and model calculations based on a phenomenological model.

Original languageEnglish
Pages (from-to)613-629
Number of pages17
JournalInternational Journal of Multiphase Flow
Volume23
Issue number4
DOIs
StatePublished - 1997
Externally publishedYes

Keywords

  • Concentrated suspensions
  • Laser-Doppler velocimetry
  • Particles migration
  • Viscous flow

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