Simulation of Sedimentation by Molecular Dynamics

Abstract

A study of sedimentation processes of macroscopic, spherical particles using a molecular dynamics simulation was undertaken. Calculations were performed on particles of 30, 50, and 100 microns radius. For particle size distributions where all of the particles have the same radius (monomodal) it was found that the density of the sediment is always less than the density of an equivalent close packed structure. In addition, an increase in particle size mixes, either 30/50, 50/100, or 30/100 microns radii, fractionation was found to occur. In all cases, the larger particles settled before the smaller particles giving rise to a layer of small particles on the top of the sediment, and a higher number ratio of larger particles in the lower portions. Australia. (jhd)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA215196

Entities

People

  • Rodney A. Borg

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Counter IED

DTIC Thesaurus Topics

  • Australia
  • Brownian Motion
  • Computational Science
  • Computer Simulations
  • Dynamics
  • Equations
  • Equations Of Motion
  • Explosives
  • Fractionation
  • Materials
  • Materials Science
  • Melting Point
  • Molecular Dynamics
  • Particle Size
  • Sedimentation
  • Sediments
  • Simulations

Readers

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