Document Type

Article

Publication Date

1-1-2008

Publication Title

Physical Review Letters 101

Volume

101

First Page

075902-1

Last Page

075902-4

DOI

10.1103/PhysRevLett.101.075902

Keywords

hard sphere, non-ideal fluids

Disciplines

Other Astrophysics and Astronomy | Other Physics

Abstract

A novel stochastic fluid model is proposed with a nonideal 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 algorithm and has several computational advantages over event-driven hard-sphere molecular dynamics. Surprisingly, SHSD results in an equation of state and a 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 nanoparticle suspended in a compressible solvent.

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