On Hydrodynamic Diffusion and Velocity Fluctuations in Two--Dimensional Simulations of Sedimentation
Condensed Matter
2016-08-31 v2
Abstract
We present a numerical method to deal efficiently with large numbers of particles in incompressible fluids. The interactions between particles and fluid are taken into account by a physically motivated ansatz based on locally defined drag forces. We demonstrate the validity of our approach by performing numerical simulations of sedimenting non-Brownian spheres in two spatial dimensions and compare our results with experiments. Our method reproduces essential aspects of the experimental findings, in particular the strong anisotropy of the hydrodynamic bulk self-diffusivities.
Keywords
Cite
@article{arxiv.cond-mat/9501128,
title = {On Hydrodynamic Diffusion and Velocity Fluctuations in Two--Dimensional Simulations of Sedimentation},
author = {W. Kalthoff and S. Schwarzer and G. H. Ristow and H. J. Herrmann},
journal= {arXiv preprint arXiv:cond-mat/9501128},
year = {2016}
}
Comments
17 pages, latex, epic.sty, eepic.sty required for figures, rawfonts.sty desirable but not essential, figures separately.