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Transient and False Transient Simulation of Contaminant Transport in Fractured Permeable Formations

Author(s): H. Rubin; H. Bodarwe; D. Jansen; J. Kongeter

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Abstract: This study concerns the dispersion of contaminant in an aquifer exemplified by a saturated fractured sandstone formation. Transient and false transient modeling approaches were used to simulate the contaminant transport. Contaminant transport in the domain is governed by the following parameters: (a) the ratio between flow in the permeable blocks and the fracture network, (b) the storage and retardation in the fracture network, and (c) the ratio between the dispersivity in the discrete fractures and the characteristic size of the blocks. It is found that the fracture storage increases the equivalent porosity, and decreases the dispersion, originating from the mixing between the fracture and permeable block flows. Dispersion in discrete fractures has no effect on the equivalent porosity. It causes a limited growth of the contaminant dispersion in the domain.

DOI:

Year: 1997

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