Stochastic hard-sphere dynamics for hydrodynamics of nonideal fluids

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

Research output: Contribution to journalArticlepeer-review


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
Issue number7
StatePublished - Aug 15 2008

ASJC Scopus subject areas

  • General Physics and Astronomy


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