In this paper we propose a time discretization of a system of two parabolic equations describing diffusion-driven atom rearrangement in crystalline matter. The equations express the balances of microforces and microenergy; the two phase fields are the order parameter and the chemical potential. The initial and boundary-value problem for the evolutionary system is known to be well posed. Convergence of the discrete scheme to the solution of the continuous problem is proved by a careful development of uniform estimates, by weak compactness and a suitable treatment of nonlinearities. Moreover, for the difference of discrete and continuous solutions we prove an error estimate of order one with respect to the time step.
@article{M2AN_2014__48_4_1061_0,
author = {Colli, Pierluigi and Gilardi, Gianni and Krej\v c\'\i , Pavel and Podio-Guidugli, Paolo and Sprekels, J\"urgen},
title = {Analysis of a time discretization scheme for a nonstandard viscous Cahn-Hilliard system},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
volume = {48},
year = {2014},
pages = {1061-1087},
doi = {10.1051/m2an/2014005},
mrnumber = {3264346},
language = {en},
url = {http://dml.mathdoc.fr/item/M2AN_2014__48_4_1061_0}
}
Colli, Pierluigi; Gilardi, Gianni; Krejčí, Pavel; Podio-Guidugli, Paolo; Sprekels, Jürgen. Analysis of a time discretization scheme for a nonstandard viscous Cahn-Hilliard system. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 48 (2014) pp. 1061-1087. doi : 10.1051/m2an/2014005. http://gdmltest.u-ga.fr/item/M2AN_2014__48_4_1061_0/
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