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

doi:10.1016/S0301-9322(96)00077-8

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 journal › Article › peer-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 < φ_s < 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 language	English
Pages (from-to)	613-629
Number of pages	17
Journal	International Journal of Multiphase Flow
Volume	23
Issue number	4
DOIs	https://doi.org/10.1016/S0301-9322(96)00077-8
State	Published - 1997
Externally published	Yes

Keywords

Concentrated suspensions
Laser-Doppler velocimetry
Particles migration
Viscous flow

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

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.",

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T2 - Particle migration, velocity and concentration profiles in rectangular ducts

AU - Shauly, A.

AU - Averbakh, A.

AU - Nir, A.

AU - Semiat, R.

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

KW - Concentrated suspensions

KW - Laser-Doppler velocimetry

KW - Particles migration

KW - Viscous flow

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DO - 10.1016/S0301-9322(96)00077-8

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EP - 629

JO - International Journal of Multiphase Flow

JF - International Journal of Multiphase Flow

SN - 0301-9322

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