Spinodal decomposition in multicomponent fluid mixtures: A molecular dynamics study

Mohamed Laradji, Ole G. Mouritsen, Søren Toxvaerd

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    Abstract

    We have investigated the effect of the number p of components on the dynamics of phase separation in two-dimensional symmetric multicomponent fluids. In contrast to concentrated two-dimensional binary fluids, where the growth dynamics is controlled by the coupling of the velocity held to the order parameter, leading to large growth-exponent values, the dynamics in multicomponent fluids (p = 3, 4) is found to follow a t(1/3) growth law, where t is time, which we relate to a long-wavelength evaporation-condensation process. These findings, which are proposed to be consequences of the compact domain structure persisting in multicomponent fluids, imply that hydrodynamic modes do not affect the dynamics of the phase separation in these systems.
    Original languageEnglish
    JournalPhysical Review E. Statistical, Nonlinear, and Soft Matter Physics
    Volume53
    Issue number4
    Pages (from-to)3673-3681
    ISSN1063-651X
    DOIs
    Publication statusPublished - 1996

    Bibliographical note

    Copyright (1996) American Physical Society.

    Keywords

    • SYSTEMS
    • BINARY-FLUID
    • PHASE-SEPARATION
    • SIMULATIONS

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