Stochastic hard-sphere dynamics for hydrodynamics of nonideal fluids

Aleksandar Donev, Berni J. Alder, Alejandro L. Garcia

Research output: Contribution to journalArticle

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 1l 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.

Original languageEnglish (US)
Article number075902
JournalPhysical Review Letters
Volume101
Issue number7
DOIs
StatePublished - Aug 15 2008

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hydrodynamics
fluids
fluid dynamics
compressibility
equations of state
transport properties
molecular dynamics
nanoparticles
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Stochastic hard-sphere dynamics for hydrodynamics of nonideal fluids. / Donev, Aleksandar; Alder, Berni J.; Garcia, Alejandro L.

In: Physical Review Letters, Vol. 101, No. 7, 075902, 15.08.2008.

Research output: Contribution to journalArticle

Donev, Aleksandar ; Alder, Berni J. ; Garcia, Alejandro L. / Stochastic hard-sphere dynamics for hydrodynamics of nonideal fluids. In: Physical Review Letters. 2008 ; Vol. 101, No. 7.
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