Now showing items 1-20 of 59

    • A fractal model to describe the evolution of multiphase flow properties during mineral dissolution 

      Guarracino, Luis; Roetting, Tobias Stefan; Carrera Ramírez, Jesús (Elsevier, 2014-05-01)
      Article
      Restricted access - publisher's policy
      Understanding the changes in multiphase flow parameters caused by mineral dissolution-precipitation is required for multiple applications ranging from geological storage of CO2, enhanced geothermal energy production or ...
    • A method for incorporating chemical reactions into CODE_BRIGHT 

      Saaltink, Maarten Willem; Vilarrasa Riaño, Víctor; Gaspari, Francesca de; Silva Rojas, Orlando Enrique; Carrera Ramírez, Jesús (Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica (ETCG), 2012)
      Conference report
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    • A methodology for analysing the drainage system in excavations between sheet pile walls 

      Jurado Elices, Anna; Bolster, Diogo; Pujades Garnes, Estanislao; Vázquez Suñé, Enric; Carrera Ramírez, Jesús (2009-10)
      Conference lecture
      Open Access
      The development of an underground station below the water table requires rigorous and careful planning. As such an in depth knowledge of the station construction designs and the related hydraulic behavior are required in ...
    • A sensivity analysis of tide-induced head fluctuations in coastal aquifers 

      Slooten, Luit Jan; Carrera Ramírez, Jesús; Castro, Eduardo; Fernández García, Daniel (Elsevier, 2010)
      Article
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      The response of coastal aquifers to sea-level fluctuations, notably tides, is known to contain much information about hydraulic parameters. We performed sensitivity analyses to assess how much, about what and where this ...
    • Acid mine drainage in the Iberian Pyrite Belt: 2. Lessons learned from recent passive remediation experiences 

      Ayora Ibáñez, Carlos; Caraballo, Manuel A.; Macías Suárez, Francisco; Roetting, Tobias Stefan; Carrera Ramírez, Jesús; Nieto Liñán, José Miguel (2013-11)
      Article
      Restricted access - publisher's policy
      The Iberian Pyrite Belt (IPB), SW Spain and Portugal, contains about 100 abandoned mine wastes and galleries that release acid mine drainages (AMD) to the Tinto and Odiel rivers. In situ passive remediation technologies ...
    • Barrier effect of underground structures on aquifers 

      Pujades Garnes, Estanislao; López, Ander; Carrera Ramírez, Jesús; Vázquez Suñé, Enric; Jurado Elices, Anna (2012)
      Article
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      Impervious structures below the water table modify the natural groundwater flow in aquifers. They act as barriers, causing heads to rise upgradient and to fall downgradient. We define the barrier effect as the increase in ...
    • Changes in hydrodynamic, structural and geochemical properties in carbonate rock samples due to reactive transport 

      Martínez Pérez, Laura; Luquot, Linda; Carrera Ramírez, Jesús (Elsevier, 2017-01)
      Article
      Open Access
      Reactive transport plays an important role in the development of a wide range of both anthropic and natural processes affecting geological media. To predict the consequences of reactive transport processes on structural ...
    • Characterization of flow parameters and evidence of pore clogging during limestone dissolution experiments 

      Luquot, Linda; Roetting, Tobias Stefan; Carrera Ramírez, Jesús (2014-08-01)
      Article
      Restricted access - publisher's policy
      Rock dissolution induces changes in texture (porosity, pore-size distribution, or tortuosity) which modify multiphase flow and transport properties (permeability, diffusion coefficient, retention curve). Limestone dissolution ...
    • CO2 injection in deep saline sloping aquifers through a vertical well 

      Vilarrasa Riaño, Víctor; Olivella Pastallé, Sebastià; Carrera Ramírez, Jesús (2011)
      Conference report
      Open Access
    • Combining fiber optic DTS, cross-hole ERT and time-lapse induction logging to characterize and monitor a coastal aquifer 

      Folch Sancho, Albert; Val Alonso, Laura del; Luquot, Linda; Martínez Pérez, Laura; Bellmunt, F.; Le Lay, Hugo; Rodellas, Valentí; Ferrer Ramos, Nuria; Palacios Pierluissi, Andrea Viviana; Marazuela Calvo, Miguel Ángel; Diego Feliu, Marc; Pool Ramírez, Maria; Goyetche, Tybaud; Ledo, J.; Pezard, Philipe; Bour, Olivier; Queralt, P.; Marcuello, A.; Garcia Orellana, Jordi; Saaltink, Maarten Willem; Vázquez Suñé, Enric; Carrera Ramírez, Jesús (Elsevier, 2020-09)
      Article
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      The characterization of saline water intrusion (SWI) and its hydrodynamics is a key issue to understand submarine groundwater discharge (SGD) and manage groundwater resources in coastal areas. To test and compare different ...
    • Compositional formulation for multi phase flow reactive transport in porous media: an approach that simplifies coupling between phenomena 

      Gamazo Rusnac, Pablo Andres; Saaltink, Maarten Willem; Carrera Ramírez, Jesús (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2010)
      Conference report
      Open Access
      In this work we discuss coupling difficulties that arises when solving phase and species conservation equations. We present a compositional formulation that avoids these difficulties, and allows solving multiphase reactive ...
    • Coupling of mass transfer and reactive transport for nonlinear reactions in heterogeneous media 

      Willmann, Mathias; Carrera Ramírez, Jesús; Sánchez Vila, Francisco Javier; Silva Rojas, Orlando Enrique; Dentz, Marco (2010-07-01)
      Article
      Open Access
      Fast chemical reactions are driven by mixing‐induced chemical disequilibrium. Mixing is poorly represented by the advection‐dispersion equation. Instead, effective dynamics models, such as multirate mass transfer (MRMT), ...
    • Deep enclosures versus pumping to reduce settlements during shaft excavations 

      Pujades Garnes, Estanislao; Vázquez Suñé, Enric; Carrera Ramírez, Jesús; Vilarrasa Riaño, Víctor; De Simone, Silvia; Jurado Elices, Anna; Ledesma Villalba, Alberto; Ramos Schneider, Gonzalo; Lloret Morancho, Antonio (2014-02-04)
      Article
      Restricted access - publisher's policy
      Deep excavations in aquifers may be constructed by combining pumping with the cut and cover method. The enclosures are often deepened more than structurally needed, in order to diminish the risk of heave or fluidisation ...
    • Dewatering of a deep excavation undertaken in a layered soil 

      Pujades Garnes, Estanislao; Vázquez Suñé, Enric; Carrera Ramírez, Jesús; Jurado Elices, Anna (2014-08-21)
      Article
      Restricted access - publisher's policy
      In order to carry out deep excavations under the water table in urban environments, the safety of the work site and of the adjacent buildings is a major cause for concern. One of the most common and effective methods of ...
    • Dissolution patterns and mixing dynamics in unstable reactive flow 

      Hidalgo, Juan J.; Dentz, Marco; Cabeza Diaz de Ceiro, Yoar; Carrera Ramírez, Jesús (2015-08-16)
      Article
      Open Access
      We study the fundamental problem of mixing and chemical reactions under a Rayleigh-Taylor-type hydrodynamic instability in a miscible two-fluid system. The dense fluid mixture, which is generated at the fluid-fluid interface, ...
    • Dynamics of water vapor flux and water separation processes during evaporation from a salty dry soil 

      Gran Esforzado, Meritxell; Massana, Jordi; Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Olivella Pastallé, Sebastià; Ayora Ibáñez, Carlos; Lloret Morancho, Antonio (Elsevier, 2011-01)
      Article
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      Evaporation from a salty soil generates salt accumulation near the surface with the subsequent deterioration of the soil quality. Salinization mechanisms are poorly understood despite their global impact. Vapor flux and ...
    • Emerging organic contaminants in groundwater in Spain: A review of sources, recent occurrence and fate in a European context 

      Jurado Elices, Anna; Vázquez Suñé, Enric; Carrera Ramírez, Jesús; López de Alda, Miren; Pujades Garnes, Estanislao; Barceló Cullerés, Damià (2012)
      Article
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      This paper reviewed the presence of emerging organic contaminants (EOCs) that have been found in the groundwater in Spain in both, rural and urban areas. The list of compounds included pesticides, pharmaceutical active ...
    • Estimation of hydraulic parameters for heterogeneous coastal aquifer systems from pumping test analysis and tidal response 

      Pool Ramírez, María; Carrera Ramírez, Jesús (2013)
      Conference report
      Open Access
    • Estratigrafía y petrología del subsuelo precuaternario del sector SW de la depresión de Barcelona (Cadenas Costeras Catalanas, NE de Iberia) 

      Parcerisa Duocastella, David; Gámez, D; Gómez Gras, David Manuel; Usera, J; Simó Marfá, Juan Antonio; Carrera Ramírez, Jesús (2008-12)
      Article
      Open Access
      Las numerosas obras de Ingeniería Civil que se han realizado en los últimos años en la depresión de Barcelona (ampliación del aeropuerto, ampliación del metro y AVE fundamentalmente) han permitido recabar mucha información ...
    • Excavación de un pozo profundo para revisión de una tuneladora en el centro de Barcelona 

      Ledesma Villalba, Alberto; Lloret Morancho, Antonio; de Santos, C.; Ramos, Gonzalo; Alonso Pérez de Agreda, Eduardo; Vázquez Suñé, Enric; Pujades Garnes, Estanislao; Carrera Ramírez, Jesús (Sociedad Española de Mecánica del Suelo e Ingeniería Geotécnica, 2012)
      Conference report
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