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Computation 2016, 4(1), 2; doi:10.3390/computation4010002

Modeling Groundwater Flow in Heterogeneous Porous Media with YAGMod

1
Università degli Studi di Milano, Dipartimento di Scienze della Terra “A. Desio”, via Cicognara 7, I-20129 Milano, Italy
2
CNR-IDPA (Consiglio Nazionale delle Ricerche, Istituto per la Dinamica dei Processi Ambientali), via Mario Bianco 9, I-20131 Milano, Italy
3
CINFAI, Consorzio Interuniversitario Nazionale per la Fisica delle Atmosfere e delle Idrosfere, Piazza Niccolò Mauruzi 17, I-62029 Tolentino (MC), Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Qinjun Kang and Li Chen
Received: 30 September 2015 / Revised: 7 November 2015 / Accepted: 18 December 2015 / Published: 29 December 2015
(This article belongs to the Special Issue Advances in Modeling Flow and Transport in Porous Media)
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Abstract

Modeling flow and transport in porous media requires the management of complexities related both to physical processes and to subsurface heterogeneity. A thorough approach needs a great number of spatially-distributed phenomenological parameters, which are seldom measured in the field. For instance, modeling a phreatic aquifer under high water extraction rates is very challenging, because it requires the simulation of variably-saturated flow. 3D steady groundwater flow is modeled with YAGMod (yet another groundwater flow model), a model based on a finite-difference conservative scheme and implemented in a computer code developed in Fortran90. YAGMod simulates also the presence of partially-saturated or dry cells. The proposed algorithm and other alternative methods developed to manage dry cells in the case of depleted aquifers are analyzed and compared to a simple test. Different approaches yield different solutions, among which, it is not possible to select the best one on the basis of physical arguments. A possible advantage of YAGMod is that no additional non-physical parameter is needed to overcome the numerical difficulties arising to handle drained cells. YAGMod also includes a module that allows one to identify the conductivity field for a phreatic aquifer by solving an inverse problem with the comparison model method. View Full-Text
Keywords: groundwater; forward problem; inverse problem groundwater; forward problem; inverse problem
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cattaneo, L.; Comunian, A.; de Filippis, G.; Giudici, M.; Vassena, C. Modeling Groundwater Flow in Heterogeneous Porous Media with YAGMod. Computation 2016, 4, 2.

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