Phase separation between two fluids in two dimensions is investigated by means of direct numerical simulations of coupled Navier-Stokes and Cahn-Hilliard equations. We study the phase ordering process in the presence of an external stirring acting on the velocity field. For both active and passive mixtures we find that, for a sufficiently strong stirring, coarsening is arrested in a stationary dynamical state characterized by a continuous rupture and formation of finite domains. Coarsening arrest is shown to be independent of the chaotic or regular nature of the flow.
Description
Turbulence and Coarsening in Active and Passive Binary Mixtures
%0 Journal Article
%1 berti:224501
%A Berti, S.
%A Boffetta, G.
%A Cencini, M.
%A Vulpiani, A.
%D 2005
%I APS
%J Physical Review Letters
%K Navier-Stokes_equations cencini coarsening flow_simulation phase_separation turbulence
%N 22
%P 224501
%R 10.1103/PhysRevLett.95.224501
%T Turbulence and Coarsening in Active and Passive Binary Mixtures
%U http://link.aps.org/abstract/PRL/v95/e224501
%V 95
%X Phase separation between two fluids in two dimensions is investigated by means of direct numerical simulations of coupled Navier-Stokes and Cahn-Hilliard equations. We study the phase ordering process in the presence of an external stirring acting on the velocity field. For both active and passive mixtures we find that, for a sufficiently strong stirring, coarsening is arrested in a stationary dynamical state characterized by a continuous rupture and formation of finite domains. Coarsening arrest is shown to be independent of the chaotic or regular nature of the flow.
@article{berti:224501,
abstract = {Phase separation between two fluids in two dimensions is investigated by means of direct numerical simulations of coupled Navier-Stokes and Cahn-Hilliard equations. We study the phase ordering process in the presence of an external stirring acting on the velocity field. For both active and passive mixtures we find that, for a sufficiently strong stirring, coarsening is arrested in a stationary dynamical state characterized by a continuous rupture and formation of finite domains. Coarsening arrest is shown to be independent of the chaotic or regular nature of the flow.},
added-at = {2007-10-05T00:37:34.000+0200},
author = {Berti, S. and Boffetta, G. and Cencini, M. and Vulpiani, A.},
biburl = {https://www.bibsonomy.org/bibtex/221e43d50ddcc4551e9bd0a14b75207be/mcencini},
description = {Turbulence and Coarsening in Active and Passive Binary Mixtures},
doi = {10.1103/PhysRevLett.95.224501},
eid = {224501},
interhash = {ab5559697b77784458c303ca0cbd185c},
intrahash = {21e43d50ddcc4551e9bd0a14b75207be},
journal = {Physical Review Letters},
keywords = {Navier-Stokes_equations cencini coarsening flow_simulation phase_separation turbulence},
number = 22,
numpages = {4},
pages = 224501,
publisher = {APS},
timestamp = {2007-10-05T00:46:29.000+0200},
title = {Turbulence and Coarsening in Active and Passive Binary Mixtures},
url = {http://link.aps.org/abstract/PRL/v95/e224501},
volume = 95,
year = 2005
}