DYNAMIC VISCOUS RESUSPENSION OF BIDISPERSE SUSPENSIONS .1. EFFECTIVE DIFFUSIVITY

被引：18
作者：
KRISHNAN, GP
LEIGHTON, DT
机构：
[1] Department of Chemical Engineering, University of Notre Dame, Notre Dame
来源：
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 1995年 / 21卷 / 05期
关键词：
SUSPENSIONS; SHEAR-INDUCED DIFFUSION; BIDISPERSE; PARTICULATE FORMS;
D O I：
10.1016/0301-9322(95)00008-L
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, we describe an experimental investigation into the dynamic viscous resuspension of bidisperse suspensions in an annular parallel plate device. We use the model of Chapman and Leighton to determine the effective diffusivity of the particulate phase (51.0 and 119.0 mu m glass spheres) in the plane of shear as a function of overall concentration (0.3 < phi < 0.5) as well as the relative size fraction of the large particles (0.0 < phi(L)/(phi(L) + phi(S)) < 1.0). The effective diffusivity of a mixed suspension was found to be somewhat less than the volume average of the diffusivities of monodisperse large and small sphere suspensions.
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页码：721 / 732
页数：12
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