Analytical Solutions and Simulation Approaches for Double Permeability Aquifers |
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Authors: | Konstantinos N Moutsopoulos Vassilios A Tsihrintzis |
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Affiliation: | (1) Laboratory of Ecological Engineering and Technology, Department of Environmental Engineering, School of Engineering, Democritus University of Thrace, 67100 Xanthi, Greece |
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Abstract: | In this paper we develop analytical solutions for 1D unsteady flow in an infinite double permeability aquifer. Two asymptotic
cases are considered: the near-hydraulic-equilibrium-state and the far-hydraulic-equilibrium-state. It is demonstrated that
for both cases the equation for the piezometric head can be expressed in leading order, as the classical solution of the simple
permeability medium, to which correction terms are added. On the basis of these findings the accuracy of the simulations using
conventional approaches (i.e. MODFLOW, MT3D codes) is discussed, while decision tools for the choice of the adequate double
continuum model are also provided. |
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Keywords: | Double permeability Double porosity Analytical solutions Aquifer simulation Contaminant transport |
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