A Novel Monte Carlo Approach to the Dynamics of Fluids --- Single Particle Diffusion, Correlation Functions and Phase Ordering of Binary Fluids

1996/03/27 by P. B. Sunil Kumar, Kumar, P. B. Sunil, Madan Rao +1
Engineering · Materials Science · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Material Dynamics and Properties #Phase Equilibria and Thermodynamics #Theoretical and Computational Physics #cond-mat

paper · pdf · doi:10.48550/arxiv.cond-mat/9603168

Latex, 4 pages, 4 figures

arxiv created 1996/03/27 · openalex publication_date 1996/03/27 · arxiv updated 2009/11/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28

Abstract

We propose a new Monte Carlo scheme to study the late-time dynamics of a 2-dim hard sphere fluid, modeled by a tethered network of hard spheres. Fluidity is simulated by breaking and reattaching the flexible tethers. We study the diffusion of a tagged particle, and show that the velocity autocorrelation function has a long-time t^-1 tail. We investigate the dynamics of phase separation of a binary fluid at late times, and show that the domain size R(t) grows as t^1/2 for high viscosity fluids with a crossover to t^2/3 for low viscosity fluids. Our scheme can accomodate particles interacting with a pair potential V(r),and modified to study dynamics of fluids in three dimensions.

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