The effect of Brownian diffusion on shear-induced coagulation of colloidal dispersions

The effect of a small amount of Brownian diffusion on shear-induced coagulation of spherical particles has been calculated. This has been accomplished by considering the binary collision process between a test sphere and identical spheres interacting with the test sphere through induced-dipole attra...

Full description

Saved in:
Bibliographic Details
Published in:Journal of fluid mechanics 1983-08, Vol.133, p.17-35
Main Authors: Feke, D. L., Schowalter, W. R.
Format: Article
Language:English
Subjects:
colloids
diffusion
dispersion
Exact sciences and technology
Fluid dynamics
fluid mechanics
Fundamental areas of phenomenology (including applications)
granular materials
hydrodynamics
hydrology
Nonhomogeneous flows
Physics
shear strength
viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of a small amount of Brownian diffusion on shear-induced coagulation of spherical particles has been calculated. This has been accomplished by considering the binary collision process between a test sphere and identical spheres interacting with the test sphere through induced-dipole attraction, electrostatic repulsion and hydrodynamically induced forces. The effect of diffusion is found by means of an expansion in inverse Péclet number. Specific calculations were performed for uniaxial extension and for laminar shear flow. It is found that Brownian diffusion, the effect of which is nonlinearly coupled with flow type and strength, can act to increase or decrease the coagulation rate.
ISSN:0022-1120
1469-7645
DOI:10.1017/S0022112083001767