A dimensionally-reduced fracture flow model for poroelastic media with fluid entry resistance and fluid slip

Elisa A. Bergkamp (Corresponding author), Clemens V. Verhoosel, Joris J.C. Remmers, David M.J. Smeulders

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We develop a model which couples the flow in a discrete fracture to a deformable porous medium. To account for the discrete representation of the fracture, a dimensionally-reduced fluid flow model is proposed. The fluid flow model incorporates both a reduced permeability of the fracture walls due to the skin effect, and a slip of fluid flowing along the permeable fracture walls. Biot's model for poroelastic media is coupled to a fracture flow model based on a thin-film approximation of the compressible Navier-Stokes equations. The fracture flow model incorporates a fluid entry resistance parameter to relate the leak-off through the fracture walls to a pressure jump across the fracture walls, and the Beavers-Joseph-Saffman slip rate coefficient to represent the fluid slip along the fracture walls. The numerical model is based on a thermodynamic framework in which all energy storage and dissipative mechanisms in the problem are identified, including the mechanisms related to the interface effects. The thermodynamic framework is employed to solve the nonlinear coupled problem up to a specified energy range through a Picard iteration technique and to study the model and its results. Studies are presented for a range of fluid entry resistance parameters and Beavers-Joseph-Saffman slip rate coefficients, showing the capability of the model to simulate skin and slip effects in a dimensionally-reduced fracture setting.

Original languageEnglish
Article number110972
Number of pages35
JournalJournal of Computational Physics
Publication statusPublished - 15 Apr 2022


  • (Extended) finite element method
  • Fluid entry resistance
  • Fluid slip
  • Fracture flow
  • Poroelasticity
  • Thermodynamic framework


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