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Fracture flow simulation using a finite-difference lattice Boltzmann method.

I Kim1, W B Lindquist, W B Durham

  • 1Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, New York 11794-3600, USA. ibkim@ams.sunysb.edu

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|June 6, 2003
PubMed
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Numerical computations simulate single-phase flow in digitized rock fractures, comparing finite difference lattice Boltzmann method predictions with laboratory measurements for fracture permeability under simulated midcrustal pressures.

Area of Science:

  • Geophysics
  • Rock Mechanics
  • Computational Fluid Dynamics

Background:

  • Understanding fluid flow in rock fractures is crucial for subsurface resource management and geological storage.
  • Simulating flow in complex fracture geometries presents significant computational challenges.

Purpose of the Study:

  • To numerically compute single-phase flow through 3D digitized rock fractures.
  • To compare numerical predictions of fracture permeability with laboratory measurements.
  • To evaluate the efficacy of the finite difference lattice Boltzmann method for this application.

Main Methods:

  • Utilized a finite difference lattice Boltzmann method to simulate Navier-Stokes flow.
  • Employed digitized fracture datasets from Harcourt granite tensile fractures.

Related Experiment Videos

  • Performed computations under varied simulated confining pressures relevant to midcrustal depths.

    • Main Results:

    • Numerical predictions of fracture permeability were generated.
    • These predictions were compared against laboratory measurements on the same fractures.
    • The method demonstrated accurate resolution across fracture apertures using non-uniform grids.

    Conclusions:

    • The finite difference lattice Boltzmann method is suitable for simulating fluid flow in digitized rock fractures.
    • Accurate permeability predictions can be achieved even with complex fracture geometries.
    • This approach offers a viable alternative to traditional methods for fracture flow analysis.