Dynamics of hard-sphere suspensions.
Dynamics of hard-sphere suspensions.
复制标题
硬球悬浮液的动力学。
DOI：
10.1103/physreve.50.r16
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
I. Oppenheim
中科院分区：
文献类型：
--
作者：
M. Tokuyama;I. Oppenheim
本文提出了一个既有流体动力相互作用又有直接相互作用的布朗粒子硬球浓悬浮动力学系统理论。导出了粒子数密度的另一种方程。从一个新的角度探讨了短时间和长时间自扩散系数的体积分数依赖性。短程和长程水动力相互作用在这两个系数中都起着重要的作用，而直接相互作用则大大减少了水动力相互作用。
A systematic theory for the dynamics of concentrated hard-sphere suspensions of interacting Brownian particles with both hydrodynamic and direct interactions is presented. An alternative equation for the number density of particles is derived. The volume-fraction dependence of the short-and long-time self-diffusion coefficients is thus explored from a new point of view. Both the short-range and the long-range hydrodynamic interactions are shown to play an important role in both coefficients, while the direct interactions are reduced drastically by the hydrodynamic interactions.