Smoothed-particle hydrodynamics and nonequilibrium molecular dynamics

摘要

Gingold, Lucy, and Monaghan invented a grid-free version of continuum mechanics ''smoothed-particle hydrodynamics,'' in 1977. It is a likely contributor to ''hybrid'' simulations combining atomistic and continuum simulations. We describe applications of this particle-based continuum technique from the closely-related standpoint of nonequilibrium molecular dynamics. We compare chaotic Lyapunov spectra for atomistic solids and fluids with those which characterize a two-dimensional smoothed-particle fluid system.