Lattice Boltzmann Simulations of Fluid Flow in Continental Carbonate Reservoir Rocks and in Upscaled Rock Models Generated with Multiple-Point Geostatistics

Figure 8

Bounce back conditions of fluid particles for a node at the fluid/rock interface. (a) Colored vectors are streamed to neighboring nodes and black vectors towards the node at the fluid rock interface. Particles travelling into the solid surface are represented by vectors “A,” “B,” and “C.” (b) Black vectors of the neighboring nodes have been streamed to the node at the fluid/rock interface and, correspondingly, colored vectors haven been streamed to neighboring nodes. Vectors “A,” “B,” and “C” cannot be streamed towards a neighboring node, since particle displacement is interrupted by the solid surface. The latter vectors were therefore bounced back according to vectors “D,” “E,” and “F” with, respectively, the same directions but in the opposite sense.

(a)

(b)