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@ARTICLE{Theers:283733,
author = {Theers, Mario and Westphal, Elmar and Gompper, Gerhard and
Winkler, Roland G.},
title = {{F}rom local to hydrodynamic friction in {B}rownian motion:
{A} multiparticle collision dynamics simulation study},
journal = {Physical review / E},
volume = {93},
number = {3},
issn = {2470-0045},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2016-02020},
pages = {032604},
year = {2016},
abstract = {The friction and diffusion coefficients of rigid spherical
colloidal particles dissolved in a fluid are determined from
velocity and force autocorrelation functions by mesoscale
hydrodynamic simulations. Colloids with both slip and
no-slip boundary conditions are considered, which are
embedded in fluids modeled by multiparticle collision
dynamics with and without angular momentum conservation. For
no-slip boundary conditions, hydrodynamics yields the
well-known Stokes law, while for slip boundary conditions
the lack of angular momentum conservation leads to a
reduction of the hydrodynamic friction coefficient compared
to the classical result. The colloid diffusion coefficient
is determined by integration of the velocity autocorrelation
function, where the numerical result at shorter times is
combined with the theoretical hydrodynamic expression for
longer times. The suitability of this approach is confirmed
by simulations of sedimenting colloids. In general, we find
only minor deviations from the Stokes-Einstein relation,
which even disappear for larger colloids. Importantly, for
colloids with slip boundary conditions, our simulation
results contradict the frequently assumed additivity of
local and hydrodynamic diffusion coefficients},
cin = {IAS-2 / ICS-2},
ddc = {530},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000371745300007},
pubmed = {pmid:27078411},
doi = {10.1103/PhysRevE.93.032604},
url = {https://juser.fz-juelich.de/record/283733},
}