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Article
Self-Consistent Multiscale Modeling in the Presence of Inhomogeneous Fields
Multiscale Modeling and Simulation (2009)
  • David Keffer, University of Tennessee - Knoxville
Abstract

Molecular dynamics (MD) simulations of a Lennard–Jones fluid in an inhomogeneous external field generate steady-state profiles of density and pressure with nanoscopic heterogeneities. The continuum level of mass, momentum, and energy transport balances is capable of reproducing the MD profiles only when the equation of state for pressure as a function of density is extracted directly from the molecular level of description. We show that the density profile resulting from simulation is consistent with both a molecular-level theoretical prediction from statistical mechanics as well as the solution of the continuum-level set of differential equations describing the conservation of mass and momentum.

Keywords
  • molecular dynamics,
  • inhomogeneous fluid,
  • multiscale modeling,
  • thermostat
Publication Date
2009
Citation Information
David Keffer. "Self-Consistent Multiscale Modeling in the Presence of Inhomogeneous Fields" Multiscale Modeling and Simulation Vol. 8 Iss. 1 (2009)
Available at: http://works.bepress.com/david_keffer/1/