Dynamic Length-Scale Characterization and Nonequilibrium Statistical Mechanics of Transport in Open-Cell Foams

Abstract

Nuclear magnetic resonance measurements of scale dependent dynamics in a random solid open-cell foam reveal a characteristic length scale for transport processes in this novel type of porous medium. These measurements and lattice Boltzmann simulations for a model foam structure indicate dynamical behavior analogous to lower porosity consolidated granular porous media, despite extremely high porosity in solid cellular foams. Scaling by the measured characteristic length collapses data for different foam structures as well as consolidated granular media. The nonequilibrium statistical mechanics theory of preasymptotic dispersion, developed for hierarchical porous media, is shown to model the hydrodynamic dispersive transport in a foam structure.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA509885

Entities

People

  • Joseph D. Seymour
  • Robert S. Maier
  • Sarah L. Codd
  • Tyler R. Brosten

Organizations

  • Montana State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Engineering
  • Flow Rate
  • Fluid Flow
  • Fluid Mechanics
  • Industrial Engineering
  • Magnetic Resonance
  • Measurement
  • Mechanics
  • New York
  • Nuclear Magnetic Resonance
  • Optical Properties
  • Physics
  • Porosity
  • Porous Materials
  • Simulations
  • Statistical Mechanics
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Fire Suppression Systems Design.
  • Geotechnical Engineering.
  • Theoretical Analysis.