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arXiv · 0803.0359

Stochastic Hard-Sphere Dynamics for Hydrodynamics of Non-Ideal Fluids

Aleksandar Donev·Berni J. Alder·Alejandro L. Garcia
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Abstract

A novel stochastic fluid model is proposed with non-ideal structure factor consistent with compressibility, and adjustable transport coefficients. This Stochastic Hard Sphere Dynamics (SHSD) algorithm is a modification of the Direct Simulation Monte Carlo (DSMC) algorithm and has several computational advantages over event-driven hard-sphere molecular dynamics. Surprisingly, SHSD results in an equation of state and pair correlation function identical to that of a deterministic Hamiltonian system of penetrable spheres interacting with linear core pair potentials. The fluctuating hydrodynamic behavior of the SHSD fluid is verified for the Brownian motion of a nano-particle suspended in a compressible solvent.

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Aleksandar Donev, Berni J. Alder, Alejandro L. Garcia. 2008-07-22. Stochastic Hard-Sphere Dynamics for Hydrodynamics of Non-Ideal Fluids. https://doi.org/10.1103/physrevlett.101.075902

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