Analytical and Numerical Modeling of Flow in a Fractured Gneiss Aquifer

Ramadan Abdelaziz, Broder J. Merkel

Technische Universit?t Bergakademie Freiberg.

DOI: 10.4236/jwarp.2012.48076                

Abstract

Investigating and modeling fluid flow in fractured aquifers is a challenge. This study presents the results of a series of packer tests conducted in a fractured aquifer in Freiberg, Germany, where gneiss is the dominant rock type. Two methods were applied to acquire hydraulic properties from the packer tests: analytical and numerical modeling. MLU (Multi-Layer Unsteady state) for Windows is the analytical model that was applied. ANSYS-FLOTRAN was used to build a two-dimensional numerical model of the geometry of the layered aquifer. A reasonable match between experimental data and simulated data was achieved with the 2D numerical model while the solution from the analytical model revealed significant deviations with respect to direction.

Keywords

Ansys/Flotran; MLU for Windows; Gneiss; Packer Test; Fractured Aquifer

Conflicts of Interest

The authors declare no conflicts of interest.

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