Reinfiltration in Fractured Porous Media: Part 2 - Two Dimensional Model

Abstract

SUMMARY The fractional flow equation in a two-dimensional space with mixed boundary conditions is solved, and the expression for the reinfiltration rate across the faces of a matrix block is derived. The results show that there is a considerable variation in rate of reinfiltration across a vertical face of a matrix block. For a matrix block with an inclined face, the lower portion could drain liquid, but the upper portion could be under reinfiltration. The results also show that reinfiltration could be effective in a small area at the top portion of a matrix block.