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@ARTICLE{Hijar:6877,
author = {Hijar, H. and Sutmann, G.},
title = {{H}ydrodynamic fluctuations in thermostatted multiparticle
collision dynamics},
journal = {Physical review / E},
volume = {83},
number = {4},
issn = {1539-3755},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-6877},
pages = {046708},
year = {2011},
note = {H. H. acknowledges financial support from DAAD, Germany
(2008), and DGAPA-UNAM, Mexico (2009-2010). G. S. would like
to thank G. Gompper and R. Winkler for helpful discussions.},
abstract = {In this work we study the behavior of mesoscopic
fluctuations of a fluid simulated by Multiparticle Collision
Dynamics when this is applied together with a local
thermostatting procedure that constrains the strength of
temperature fluctuations. We consider procedures in which
the thermostat interacts with the fluid at every simulation
step as well as cases in which the thermostat is applied
only at regular time intervals. Due to the application of
the thermostat temperature fluctuations are forced to relax
to equilibrium faster than they do in the nonthermostatted,
constant-energy case. Depending on the interval of
application of the thermostat, it is demonstrated that the
thermodynamic state changes gradually from isothermal to
adiabatic conditions. In order to exhibit this effect we
compute from simulations diverse correlation functions of
the hydrodynamic fluctuating fields. These correlation
functions are compared with those predicted by a linearized
hydrodynamic theory of a simple fluid in which a thermostat
is applied locally. We find a good agreement between the
model and the numerical results, which confirms that
hydrodynamic fluctuations in Multiparticle Collision
Dynamics in the presence of the thermostat have the
properties expected for spontaneous fluctuations in fluids
in contact with a heat reservoir.},
keywords = {J (WoSType)},
cin = {JSC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {Scientific Computing (FUEK411) / 411 - Computational
Science and Mathematical Methods (POF2-411)},
pid = {G:(DE-Juel1)FUEK411 / G:(DE-HGF)POF2-411},
shelfmark = {Physics, Fluids $\&$ Plasmas / Physics, Mathematical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000290116400005},
doi = {10.1103/PhysRevE.83.046708},
url = {https://juser.fz-juelich.de/record/6877},
}