Permeability Estimation of Regular Porous Structures: A Benchmark for Comparison of Methods

Arndt Wagner, Elissa Eggenweiler, Felix Weinhardt, Zubin Trivedi, David Krach, Christoph Lohrmann, Kartik Jain, Nikolaos Karadimitriou, Carina Bringedal, Paul Voland, Christian Holm, Holger Class, Holger Steeb, Iryna Rybak*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The intrinsic permeability is a crucial parameter to characterise and quantify fluid flow through porous media. However, this parameter is typically uncertain, even if the geometry of the pore structure is available. In this paper, we perform a comparative study of experimental, semi-analytical and numerical methods to calculate the permeability of a regular porous structure. In particular, we use the Kozeny–Carman relation, different homogenisation approaches (3D, 2D, very thin porous media and pseudo 2D/3D), pore-scale simulations (lattice Boltzmann method, Smoothed Particle Hydrodynamics and finite-element method) and pore-scale experiments (microfluidics). A conceptual design of a periodic porous structure with regularly positioned solid cylinders is set up as a benchmark problem and treated with all considered methods. The results are discussed with regard to the individual strengths and limitations of the used methods. The applicable homogenisation approaches as well as all considered pore-scale models prove their ability to predict the permeability of the benchmark problem. The underestimation obtained by the microfluidic experiments is analysed in detail using the lattice Boltzmann method, which makes it possible to quantify the influence of experimental setup restrictions.

Original languageEnglish
Pages (from-to)1-23
Number of pages23
JournalTransport in porous media
Volume138
Issue number1
Early online date17 Apr 2021
DOIs
Publication statusPublished - May 2021

Keywords

  • Permeability
  • Porous medium
  • Upscaling

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