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Computation 2016, 4(1), 2;

Modeling Groundwater Flow in Heterogeneous Porous Media with YAGMod

Università degli Studi di Milano, Dipartimento di Scienze della Terra “A. Desio”, via Cicognara 7, I-20129 Milano, Italy
CNR-IDPA (Consiglio Nazionale delle Ricerche, Istituto per la Dinamica dei Processi Ambientali), via Mario Bianco 9, I-20131 Milano, Italy
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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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

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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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