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.

引用

页码：021403 / 021401