Porous Media Two-Phase Flow

Capillary Pressure, Hysteresis and Residual Saturation in Porous Media

R. Hilfer

Physica A 359, 119 (2006)

submitted on
Friday, May 20, 2005

A macroscopic theory for capillarity in porous media is presented. The capillary pressure function in this theory is not an input parameter but an outcome. The theory is based on introducing the trapped or residual saturations as state variables. It allows to predict spatiotemporal changes in residual saturation. The theory yields process dependence and hysteresis in capillary pressure as its main result.

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