Study of a three component Cahn-Hilliard flow model
ESAIM: Modélisation mathématique et analyse numérique, Tome 40 (2006) no. 4, pp. 653-687.

In this paper, we propose a new diffuse interface model for the study of three immiscible component incompressible viscous flows. The model is based on the Cahn-Hilliard free energy approach. The originality of our study lies in particular in the choice of the bulk free energy. We show that one must take care of this choice in order for the model to give physically relevant results. More precisely, we give conditions for the model to be well-posed and to satisfy algebraically and dynamically consistency properties with the two-component models. Notice that our model is also able to cope with some total spreading situations. We propose to take into account the hydrodynamics of the mixture by coupling our ternary Cahn-Hilliard system and the Navier-Stokes equation supplemented by capillary force terms accounting for surface tension effects between the components. Finally, we present some numerical results which illustrate our analysis and which confirm that our model has a better behavior than other possible similar models.

DOI : 10.1051/m2an:2006028
Classification : 35B35, 35K55, 76T30
Mots-clés : multicomponent flows, Cahn-Hilliard equations, stability 
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Boyer, Franck; Lapuerta, Céline. Study of a three component Cahn-Hilliard flow model. ESAIM: Modélisation mathématique et analyse numérique, Tome 40 (2006) no. 4, pp. 653-687. doi : 10.1051/m2an:2006028. http://archive.numdam.org/articles/10.1051/m2an:2006028/

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