Fig. 1. Benchmark model of two-dimensional digital rock with R=200 nm.
Fig. 2. Steady state streamlines computed using 4 CPU cores, p_0=0.4 MPa and Kn=0.0644.
Fig. 3. Permeability variation with the reciprocal pressure; solid line: computed results by pore-scale simulations, dash-dot line: estimations by calibrated Klinkenberg correlation models.
Appendix: Comparisons between calibrated Klinkenberg models and experimental data of two rock samples.