Figure 3
From: Study of Gas Flow Characteristics in Tight Porous Media with a Microscale Lattice Boltzmann Model

The velocity distributions in the shale digital rock under different outlet pressures.
The velocity is in the lattice unit. (a) Pout = 50.0 MPa; (b) Pout = 5.0 MPa; (c) Pout = 0.5 MPa.