Custom flow in overdamped Brownian dynamics.
Custom flow in overdamped Brownian dynamics.
复制标题
过阻尼布朗动力学中的自定义流动
DOI:
10.1103/physreve.99.023306
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Matthias Schmidt
中科院分区:
文献类型:
--
作者:
Daniel de las Heras;Johannes Renner;Matthias Schmidt
When an external field drives a colloidal system out of equilibrium, the ensuing colloidal response can be very complex, and obtaining a detailed physical understanding often requires case-by-case considerations. To facilitate systematic analysis, here we present a general iterative scheme for the determination of the unique external force field that yields prescribed inhomogeneous stationary or time-dependent flow in an overdamped Brownian many-body system. The computer simulation method is based on the exact one-body force balance equation and allows to specifically tailor both gradient and rotational velocity contributions, as well as to freely control the one-body density distribution. Hence, compressibility of the flow field can be fully adjusted. The practical convergence to a unique external force field demonstrates the existence of a functional map from both velocity and density to external force field, as predicted by the power functional variational framework. In equilibrium, the method allows to find the conservative force field that generates a prescribed target density profile, and hence implements the Mermin-Evans classical density functional map from density distribution to external potential. The conceptual tools developed here enable one to gain detailed physical insight into complex flow behaviour, as we demonstrate in prototypical situations.
登录
查看更多内容
影响因子:
8.6
作者:
Daniel de las Heras;Matthias Schmidt
通讯作者:
Matthias Schmidt
影响因子:
8.6
作者:
Nico C. X. Stuhlmüller;Tobias Eckert;Daniel de las Heras;Matthias Schmidt
通讯作者:
Matthias Schmidt
DOI:
10.1088/0953-8984/28/24/244023
发表时间:
2016
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
A. Scacchi;M. Krüger;J. Brader
通讯作者:
J. Brader
影响因子:
8.6
作者:
Besseling, R.;Weeks, Eric R.;Poon, W. C. K.
通讯作者:
Poon, W. C. K.
影响因子:
8.6
作者:
Philip Krinninger;M. Schmidt;J. Brader
通讯作者:
J. Brader