Wall accumulation of self-propelled spheres
Wall accumulation of self-propelled spheres
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DOI：
10.1209/0295-5075/101/48003
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发表时间：
2013-02-01
期刊：
影响因子：
1.8
通讯作者：
Gompper, Gerhard
中科院分区：
文献类型：
--
作者：
Elgeti, Jens;Gompper, Gerhard
通过计算机模拟和相应的Fokker-Planck方程的解析解，研究了受两个平面硬壁约束的自走布朗球的动力学。从布朗运动和自推进的结合中可以得到自推进粒子的积累，通常与流体动力偶极子相互作用有关。表面过剩被计算为粒子速度、壁面分离、平动和旋转扩散系数的函数。在狭窄通道或小推进速度的限制下，解析解与数值结果非常吻合。中国人民解放军版权所有
The dynamics of a self-propelled Brownian sphere confined between two planar hard walls is investigated by computer simulations and analytic solutions of the corresponding Fokker-Planck equation. It is shown that an accumulation of self-propelled particles, often linked to the hydrodynamic dipole interaction, can be already obtained from the combination of Brownian motion and self-propulsion. The surface excess is calculated as a function of particle velocity, wall separation, and translational and rotational diffusion coefficients. In limits of narrow channels or small propulsion velocities, analytical solutions and numerical results are in excellent agreement. Copyright (C) EPLA, 2013