A new model for simulating colloidal dynamics
Abstract
We present a new hybrid lattice-Boltzmann and Langevin molecular dynamics scheme for simulating the dynamics of suspensions of spherical colloidal particles. The solvent is modeled on the level of the lattice-Boltzmann method while the molecular dynamics is done for the solute. The coupling between the two is implemented through a frictional force acting both on the solvent and on the solute, which depends on the relative velocity. A spherical colloidal particle is represented by interaction sites at its surface. We demonstrate that this scheme quantitatively reproduces the translational and rotational diffusion of a neutral spherical particle in a liquid and show preliminary results for a charged spherical particle. We argue that this method is especially advantageous in the case of charged colloids.
Cite
@article{arxiv.cond-mat/0310598,
title = {A new model for simulating colloidal dynamics},
author = {Vladimir Lobaskin and Burkhard Duenweg},
journal= {arXiv preprint arXiv:cond-mat/0310598},
year = {2007}
}
Comments
For a movie click on the link below Fig 1