SLOW VISCOUS FLOWS OF HIGHLY CONCENTRATED SUSPENSIONS .2. PARTICLE MIGRATION, VELOCITY AND CONCENTRATION PROFILES IN RECTANGULAR DUCTS

Authors
SHAULY A AVERBAKH A NIR A SEMIAT R
Citation
A. Shauly et al., SLOW VISCOUS FLOWS OF HIGHLY CONCENTRATED SUSPENSIONS .2. PARTICLE MIGRATION, VELOCITY AND CONCENTRATION PROFILES IN RECTANGULAR DUCTS, International journal of multiphase flow, 23(4), 1997, pp. 613-629
Citations number
17
Categorie Soggetti
Mechanics
Journal title
International journal of multiphase flow → ACNP
ISSN journal
03019322
Volume
23
Issue
4
Year of publication
1997
Pages
613 - 629
Database
ISI
SICI code
0301-9322(1997)23:4<613:SVFOHC>2.0.ZU;2-4
Abstract
The utilization of the laser-Doppler velocimetry technique in concentr ated suspensions facilitated a direct measurement of particle migratio n velocities. Velocity measurements of dispersions at moderate and hig h particle concentrations, in the range of 0.3 < phi(s) < 0.50, showed a direct connection between particle lateral migration and changes in suspension velocity profiles. The longitudinal profiles lose their Ne wtonian shape at high concentrations. A qualitative agreement is shown in this work between the measured lateral and longitudinal velocity p rofiles and model calculations based on a phenomenological model. (C) 1997 Elsevier Science Ltd.