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@ARTICLE{McPhie:57623,
author = {McPhie, M. G. and Daivis, P. J. and Snook, I.K.},
title = {{V}iscosity of a binary mixture: {A}pproach to the
hydrodynamic limit},
journal = {Physical review / E},
volume = {74},
number = {3},
issn = {1539-3755},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-57623},
pages = {031201},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {We have used equilibrium and nonequilibrium molecular
dynamics simulations to study the solute self-diffusion
coefficient and the shear rate dependence of the solution
viscosity in solutions of model nanocolloidal particles that
range in mass ratio from mu=1 up to mu=50 and size ratio
from s=1 up to s=4.03 at various concentrations. The zero
shear rate viscosities and the initial rates of shear
thinning were determined from data in the shear rate region
in which the suspension is strongly shear thinning while the
solvent remains Newtonian or is weakly shear thinning. The
rate of shear thinning increased dramatically with solute
volume fraction, regardless of whether the increase was due
to increasing solute size or increasing the solute
concentration. In a series of simulations in which the mass
ratio was varied while keeping the size ratio fixed at s=1,
we found that the approach of the viscosities and
self-diffusion coefficients to their limiting mass ratio
independent values was well described by a rather simple
exponential dependence on mass ratio. The concentration
dependence of the limiting infinite mass ratio values of the
self-diffusion coefficients and zero shear rate viscosities
were determined, and used to compute the hydrodynamic radius
R-H of the solute particles by various methods. The values
of R-H that were obtained by the different methods were
reasonably consistent with each other, and indicated that
the radius at which the slip boundary condition holds is
slightly smaller than the cross-interaction radius between
the solute and solvent particles.},
keywords = {J (WoSType)},
cin = {IFF-IWM},
ddc = {530},
cid = {I:(DE-Juel1)VDB343},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Physics, Fluids $\&$ Plasmas / Physics, Mathematical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000240870100037},
doi = {10.1103/PhysRevE.74.031201},
url = {https://juser.fz-juelich.de/record/57623},
}