KINEMATICS OF FLOW OF A SLOW SUSPENDED-PARTICLE FLUX 
ABOUT A SPHERE AS APPLIED TO THE
SEDIMENTATION OF A BIDISPERSE SUSPENSION

I. G. Dik (J. H. Dueck)a and L. L. Min'kovb

UDC 532.3

A study is made of the kinematics of flow of fine particles 
about a coarse one in the process of sedimentation of the fine particles. 
An approximate analytical solution for the increase in the settling 
rate of fine particles, which is in good agreement with the approximation 
dependence obtained earlier as a result of numerical experiment, has 
been found. It has been shown that a relatively weak entrainment of 
most of the fine particles arriving at the peripheral region of the 
cell around the coarse particle is of primary importance for the effect 
of acceleration of sedimentation. A comparison with the available 
experimental data is made.

aErlangen-Nurnberg University (Universitat Erlangen-
Nurnberg), Erlangen, Germany; email: Johann.Dueck@rzmail.uni-erlangen.de; 
bTomsk State University, Tomsk, Russia; email: lminkov@ftf.tsu.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 4, 
pp. 3-11, July-August, 2002. Original article submitted August 28, 2001; 
revision submitted November 12, 2001.

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