Volume 36, Number 4, November I 1996
|Page(s)||259 - 264|
|Section||Classical areas of phenomenology|
|Published online||01 September 2002|
Invasion percolation in correlated porous media
Departamento de Física y CONICET, Universidad Nacional de San Luis,
Chacabuco 917, 5700 San Luis, Argentina
2 CRICyT (CONICET) - Casilla de Correo 131, 5500 Mendoza, Argentina
3 Universidad Autónoma Metropolitana de México, Departamento de Química, México D.F., México
Accepted: 16 September 1996
Invasion percolation is studied on a correlated porous network described through a site-bond model which has proven to be useful for the characterization of real porous media. It is shown how the correlation degree affects the advance velocity of the invasion front, the fraction of invaded sites and bonds and the number of islands of trapped defender fluid (which are completely surrounded by invaded elements) and their size distribution. The fractal dimension of the percolating cluster, on the other hand, does not seem to be influenced by the correlation degree. As a novel result, a characteristic correlation length is found to exist which maximizes the mean invasion velocity.
PACS: 47.55.Mh – Flows through porous media / 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 47.55.Kf – Multiphase and particle-laden flows
© EDP Sciences, 1996
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