Simulation of flow in bidisperse sphere packings

Simulation methods were used to construct bidisperse, random sphere packing s and to calculate fluid velocities in the pore spaces under a uniform pres sure gradient. Based on these calculations, the Kozeny-Carman (KC) relation was found to hold for monodisperse and bidisperse sphere packings (r(1)/r( 2) = 2.6) over a range of compositions and Reynolds numbers, using the same KC parameter value (C = 5). These results are consistent with a stronger o bservation about the similarity of the pore-size and flow distributions, Po re-size distributions were Gaussian for all the simulated packings, and for all bidisperse mixtures and Reynolds numbers examined, the normalized long itudinal velocity distribution collapses onto an exponential distribution w hen scaled by the mean velocity, (C) 1999 Academic Press.