322 Molecular Dynamics Analyses on Parallel Channel Flows Driven by External Force : Comparison with NS Equation Solution

Abstract

Molecular dynamics analyses have been performed on the liquid flows driven by an external force in parallel plates. Calculated velocities have been compared with those obtained from the Navier-Stokes (NS) equation. In the case of Ar flow, calculated velocities (both profiles and absolute values) by MD analyses agree with those by the NS equation for flow channel widths greater than -5 nm. On the other hand, in the case of water flow, calculated velocities by the MD analyses are greater than those by the NS equation at least for channel widths lower than -50 nm, while calculated velocity profiles by the MD analyses are parabolic for channel widths greater than -5 nm.