Measuring shear-induced self-diffusion in a counterrotating geometry

被引：39
|
作者：
Rheology Group, Department of Applied Physics, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands [1 ]
机构：
来源：
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | 2001年 / 63卷 / 2 I期
关键词：
Correlation methods - Diffusion in liquids - Image analysis - Shear flow - Statistical methods - Strain - Vectors - Volume fraction;
D O I：
10.1103/PhysRevE.63.021403
中图分类号：
学科分类号：
摘要：
Shear-induced self-diffusion in concentrated suspensions of non-colloidal hard spheres was measured by a correlation methods. Particle motion was analyzed in detail at given time intervals through visual inspection of tracer particle positions in a refractive index matched suspension. Experiments over a wider range of well-controlled dimensionless time were enabled due to the counterrotating nature of the setup. The shear-induced self-diffusion coefficients were determined as a function of particle volume fraction in both vorticity and velocity gradient direction.
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页码：021403 / 021401
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