Exploració per autor "Fernández García, Daniel"
Ara es mostren els items 26-45 de 50
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Generalizing Agarwal's method for the interpretation of recovery tests under non-ideal conditions
Trabucchi, Michela; Carrera Ramírez, Jesús; Fernández García, Daniel (2018-09)
Article
Accés obertPumping tests are performed during aquifer characterization to gain conceptual understanding about the system through diagnostic plots and to estimate hydraulic properties. Recovery tests consist of measuring head response ... -
GIS-based software platform for managing hydrogeochemical data
Velasco Mansilla, Domitila Violeta; Vázquez Suñé, Enric; García Alcaraz, María del Mar; Serrano Juan, Alejandro; Tubau Fernandez, Isabel; Sánchez Vila, Francisco Javier; Fernández García, Daniel; Garrido, Teresa; Fraile, Josep (Springer, 2016)
Capítol de llibre
Accés restringit per política de l'editorialIn over three decades, The Handbook of Environmental Chemistry has established itself as the premier reference source, providing sound and solid knowledge about environmental topics from a chemical perspective. Written by ... -
Guía técnica para la evaluación de la problemática del subsuelo asociada a compuestos organoclorados
Fernández García, Daniel; Carles Brangari, Albert; Freixas Borrell, Genís (2004-01)
Report de recerca
Accés obertLa protecció dels sòls contaminats és un dels requeriments medioambientals fixats per la llei de residuos 10/1994 i el real decret 9/2005. Fruit d’aquests i altres canvis normatius derivats de la nova cultura medioambiental, ... -
Improving degradation of emerging organic compounds by applying chaotic advection in Managed Aquifer Recharge in randomly heterogeneous porous media
Rodríguez Escales, Paula-Felicidad; Fernández García, Daniel; DRECHSEL, J.; Folch Sancho, Albert; Sánchez Vila, Francisco Javier (2017-05)
Article
Accés obertImproving degradation rates of emerging organic compounds (EOCs) in groundwater is still a challenge. Although their degradation is not fully understood, it has been observed that some substances are preferably degraded ... -
Improving the accuracy of risk prediction from particle-based breakthrough curves reconstructed with kernel density estimators
Siirila, Erica; Fernández García, Daniel; Sánchez Vila, Francisco Javier (2015-06)
Article
Accés obertWhile particle tracking techniques are often used in risk frameworks, the number of particles needed to properly derive risk metrics such as average concentration for a given exposure duration is often unknown. If too few ... -
Lagrangian modeling of reactive transport in heterogeneous porous media with an automatic locally adaptive particle support volume
Solé Marí, Guillem; Fernández García, Daniel (2018-10)
Article
Accés obertThe particle support volume is crucial for simulating reactive transport with Lagrangian methods as it dictates the interaction among particles. Assuming that it is constant in space, the particle support volume can be ... -
Mathematical equivalence between time-dependent single-rate and multirate mass transfer models
Fernández García, Daniel; Sánchez Vila, Francisco Javier (2015-05)
Article
Accés obertThe often observed tailing of tracer breakthrough curves is caused by a multitude of mass transfer processes taking place over multiple scales. Yet, in some cases, it is convenient to fit a transport model with a single-rate ... -
Modeling reactive multi-component multi-phase flow for Geological Carbon Sequestration (GCS) with Matlab
Wang, Yufei; Fernández García, Daniel; Saaltink, Maarten Willem (2023-03)
Article
Accés restringit per política de l'editorialWe present a reactive multi-component multi-phase flow program for simulating Geological Carbon Sequestration (GCS), an approach that reduces carbon emissions by storing in deep subsurface formations. The program, called ... -
Multiprocessing for the particle tracking model MODPATH
Pérez Illanes, Rodrigo Alfonso; Fernández García, Daniel (Wiley, 2022-12)
Article
Accés obertParticle tracking has several important applications for solute transport studies in aquifer systems. Travel time distribution at observation points, particle coordinates in time and streamlines are some practical results ... -
On the formation of multiple local peaks in breakthrough curves
Siirila, Erica; Sánchez Vila, Francisco Javier; Fernández García, Daniel (2015-04)
Article
Accés obertThe analysis of breakthrough curves (BTCs) is of interest in hydrogeology as a way to parameterize and explain processes related to anomalous transport. Classical BTCs assume the presence of a single peak in the curve, ... -
Optimal reconstruction of non-symmetric travel time density distributions using a new kernel density estimator
Pedretti, Daniele; Fernández García, Daniel (2013)
Text en actes de congrés
Accés obert -
Optimal reconstruction of reaction rates from particles distributions
Fernández García, Daniel; Sánchez Vila, Francisco Javier (2010-05-07)
Text en actes de congrés
Accés obertRandom walk particle tracking methodologies to simulate solute transport of conservative species constitute an attractive alternative for their computational efficiency and absence of numerical dispersion. Yet, problems ... -
Particle density estimation with grid-projected and boundary-corrected adaptive kernels
Solé Marí, Guillem; Bolster, Diogo; Fernández García, Daniel; Sánchez Vila, Francisco Javier (Elsevier, 2019-09)
Article
Accés obertThe reconstruction of smooth density fields from scattered data points is a procedure that has multiple applications in a variety of disciplines, including Lagrangian (particle-based) models of solute transport in fluids. ... -
Probabilistic human health risk assessment of degradation-related chemical mixtures in heterogeneous aquifers: risk statistics, hot spots, and preferential channels
Henri, Christopher Vincent; Fernández García, Daniel; Barros, Felipe de (2015-06)
Article
Accés obertThe increasing presence of toxic chemicals released in the subsurface has led to a rapid growth of social concerns and the need to develop and employ models that can predict the impact of groundwater contamination on human ... -
Random-walk modeling of reactive transport in porous media with a reduced-order chemical basis of conservative components
Solé Marí, Guillem; Schmidt, Michael J.; Bolster, Diogo; Fernández García, Daniel (2021-04)
Article
Accés obertIn this work we employ a reduced-order basis of conservative chemical components to model reactive transport using a Lagrangian (particle tracking) method. While this practice is well-understood in the Eulerian (grid-based) ... -
Smoothed Particle Hydrodynamics for anisotropic dispersion in heterogeneous porous media
Pérez Illanes, Rodrigo Alfonso; Solé Marí, Guillem; Fernández García, Daniel (Elsevier, 2024-01)
Article
Accés obertIn the context of modeling solute transport through heterogeneous porous media, particle methods possess inherent advantages with respect to mesh-based (Eulerian) methods. In Smoothed Particle Hydrodynamics (SPH), particles ... -
Solute transport in bounded porous media characterized by Generalized Sub-Gaussian log-conductivity distributions
Solé Marí, Guillem; Riva, Monica; Fernández García, Daniel; Sánchez Vila, Francisco Javier; Guadagnini, Alberto (Elsevier, 2021-01)
Article
Accés obertThere are increasing evidences that probability distributions and associated statistical moments of a variety of hydrogeological and soil science variables and their spatial increments display distinctive scale-dependent ... -
Stochastic estimation of hydraulic transmissivity fields using flow connectivity indicator data
Freixas, Genis; Fernández García, Daniel; Sánchez Vila, Francisco Javier (2017-01)
Article
Accés obertMost methods for hydraulic test interpretation rely on a number of simplified assumptions regarding the homogeneity and isotropy of the underlying porous media. This way, the actual heterogeneity of any natural parameter, ... -
Taller de pràctiques de laboratori d'hidrologia subterrània mitjançant models físics experimentals
Fernández García, Daniel; Sánchez Vila, Francisco Javier; Saaltink, Maarten Willem; Custodio Gimena, Emilio (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-02-08)
Comunicació de congrés / Text en actes de congrés
Accés obertEn cap de les assignatures de grau d'hidrologia subterrània s'imparteixen pràctiques de laboratori. Això fa que l'estudiant rebi una educació purament teórica sense aaribar a assolir correctament els conceptes bàsics ... -
The effects of sediment depth and oxygen concentration on the use of organic matter: an experimental study using an infiltration sediment tank
Freixa, Anna; Rubol, Simonetta; Carles Brangari, Albert; Fernández García, Daniel; Butturini, Andrea; Sánchez Vila, Francisco Javier; Romani Cornet, Anna Maria (2015-04-02)
Article
Accés obertWater flowing through hyporheic river sediments or artificial recharge facilities promotes the development of microbial communities with sediment depth. We performed an 83-day mesocosm infiltration experment, to study ...