Calibration of a pore-network model by a pore-morphological analysis

Markus Hilpert, Roland Glantz, Cass T. Miller

Research output: Contribution to journalArticle

Abstract

Calibrating the geometry of a pore-network model is a challenging task if such a model is sought to make quantitative predictions for an experimental porous medium system. Our calibration approach maps a digital representation of a porous medium's microscopic pore geometry onto the size distributions for the pore bodies and pore throats and onto the coordination number of the network. This is accomplished by matching the morphological pore-size distribution and the genus of the network with those of the porous medium. The microscopic pore geometries were obtained by simulating random sphere packings, which match the grain-size distribution and the porosity of the experimental porous media. We obtained good agreement between simulated and measured hysteretic capillary pressure-saturation curves for three porous media. Correlations between pore-body and pore-throat sizes were important to achieve a realistic description of the simulated imbibition scanning curves.

Original languageEnglish (US)
Pages (from-to)267-285
Number of pages19
JournalTransport in Porous Media
Volume51
Issue number3
DOIs
StatePublished - Jun 1 2003

Keywords

  • Calibration
  • Capillary pressure
  • Hysteresis
  • Multiphase flow
  • Network model

ASJC Scopus subject areas

  • Catalysis
  • Chemical Engineering(all)

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