Stochastic hard-sphere dynamics for hydrodynamics of nonideal fluids.
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.
Donev
Aleksandar
A
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-9900, USA.
Alder
Berni J
BJ
Garcia
Alejandro L
AL