Lattice-Boltzmann simulations of flow through NAFION polymer membranes

Hidemitsu Hayashi, Satoru Yamamoto, Shi Aki Hyodo

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Simulations of flow through three-dimensional porous structures of NAFION polymer membranes are performed with a Lattice-Boltzmann method (LBM) for incompressible fluid. Geometry data of NAFION are constructed from a result of a dissipative particle dynamics simulation for three values of the water content, 10%, 20%, and 30%, and are used as the geometry input for the LBM. Permeability of the porous structure is extracted from results of the LBM simulation using Darcy's low. The permeability K is shown to be expressed as K = L2 × Ktpl with a characteristic length L and the dimensionless permeability Ktpl depending only on the topological structure of the porous media. Dependence of Ktpl is examined on the pressure gradient, the fluid viscosity, and the resolution of the computational grid.

Original languageEnglish
Pages (from-to)135-138
Number of pages4
JournalInternational Journal of Modern Physics B
Volume17
Issue number1-2
Publication statusPublished - Jan 20 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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