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Prediction of preferential fluid flow in porous structures based on topological network models: Algorithm and experimental validation

  • Yang Ju
  • Peng Liu
  • DongShuang Zhang
  • JiaBin Dong
  • P. G. Ranjith
  • Chun Chang
Article

Abstract

The understanding and prediction of preferential fluid flow in porous media have attracted considerable attention in various engineering fields because of the implications of such flows in leading to a non-equilibrium fluid flow in the subsurface. In this study, a novel algorithm is proposed to predict preferential flow paths based on the topologically equivalent network of a porous structure and the flow resistance of flow paths. The equivalent flow network was constructed using Poiseuille’s law and the maximal inscribed sphere algorithm. The flow resistance of each path was then determined based on Darcy’s law. It was determined that fluid tends to follow paths with lower flow resistance. A computer program was developed and applied to an actual porous structure. To validate the algorithm and program, we tested and recorded two-dimensional (2D) water flow using an ablated Perspex sheet featuring the same porous structure investigated using the analytical calculations. The results show that the measured preferential flow paths are consistent with the predictions.

Keywords

preferential flow porous structure topological networks flow resistance Darcy’s law experimental validation 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Yang Ju
    • 1
    • 2
    • 3
  • Peng Liu
    • 1
    • 4
  • DongShuang Zhang
    • 5
  • JiaBin Dong
    • 2
  • P. G. Ranjith
    • 6
  • Chun Chang
    • 1
    • 3
  1. 1.State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and TechnologyBeijingChina
  2. 2.State Key Laboratory for Geomechanics and Deep Underground EngineeringChina University of Mining and TechnologyXuzhouChina
  3. 3.School of Mechanics and Civil EngineeringChina University of Mining & TechnologyBeijingChina
  4. 4.School of Resources and Safety EngineeringChina University of Mining & TechnologyBeijingChina
  5. 5.Institute of Mechanics, Chinese Academy of ScienceBeijingChina
  6. 6.Department of Civil EngineeringMonash UniversityMelbourne, VictoriaAustralia

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