Computing and Comparing Effective Properties for Flow and Transport in Computer-Generated Porous Media

Figure 21

Fields for geometry of randomly distributed squares, : (a) solution to the homogenization problem, (b) concentration field transformed from (assuming concentration gradient across unit cell is one), and (c, d) magnitude of concentration gradient (diffusion speed).

(a)

(b)

(c)

(d) Close-up of boxed region in (c)