Exploració per altres contribucions "Carrera Ramírez, Jesús"
Ara es mostren els items 21-40 de 44
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Integrated modelling of clogging processes in artificial groundwater recharge
(Universitat Politècnica de Catalunya, 2001-04-09)
Tesi
Accés obertLa Recàrrega Artificial d'aqüífers és una tècnica extremadamente poderosa per optimitzar la gestió dels recursos hídrics. De cara a eliminar actituds escèptiques respecte a la seva aplicabilitat en nombroses situacions, ... -
Interaction between groundwater and TBM (Tunnel Boring Machine) excavated tunnels
(Universitat Politècnica de Catalunya, 2012-09-26)
Tesi
Accés obertA number of problems, e.g. sudden inflows are encountered during tunneling under the piezometric level, especially when the excavation crosses high transmissivity areas. These inflows may drag materials when the tunnel ... -
Interaction between groundwater and underground constructions
(Universitat Politècnica de Catalunya, 2013-11-27)
Tesi
Accés obertUnderground constructions below the water table may be problematic if the role of groundwater is not properly acknowledged. Difficulties worsen in urban environments. Two aspects should be taken into account in the interaction ... -
Laboratory experiments to evaluate the joint effect between heterogeneity and head fluctuation on mixing, effective porosity and tailing
(Universitat Politècnica de Catalunya, 2019-05-30)
Tesi
Accés obertTracer visualization in the laboratory at high spatial and temporal resolution can help advance the study of mixing processes. However, grain borders, fluctuations in lighting and non-uniform brightness contribute to produce ... -
Mathematical formulations of water mixing for reactive transport through heterogeneous media
(Universitat Politècnica de Catalunya, 2020-07-28)
Tesi
Accés obertThe study of transport of reacting solute through aquifers is relevant in many engineering fields. Reactive transport (RT) is complex because it consists of two phenomena, solute transport and chemical reactions, both of ... -
Metodología para la modelación hidrogeológica de medios fracturados
(Universitat Politècnica de Catalunya, 2005-03-14)
Tesi
Accés obertLos medios fracturados de baja permeabilidad (MFBP) pueden definirse como una matriz impermeable atravesada por una cantidad mayor o menor de fracturas conductivas. La experiencia indica que la mayor parte del flujo circula ... -
Mixing and speciation algorithms for geochemical and reactive transport problems
(Universitat Politècnica de Catalunya, 2015-04-30)
Tesi
Accés obertGeochemical and reactive transport modelling are essential tools in hydrogeology. They help to identify and assess geochemical processes occurring in applications such as groundwater contamination, water-rock interactions ... -
Modelación de procesos bioquímicos en aguas superficiales mediante un código de transporte reactivo
(Universitat Politècnica de Catalunya / Universitat de Barcelona, 2007-01)
Tesina
Accés obertAdaptar una formulación matemática formal y generalizada para procesos bioquímicos en aguas superficiales afectadas por vertidos residuales. -
Modelling of heat transport in aquifers. Application to the analysis of efficiency of ground heat exchangers in the city of Barcelona
(Universitat Politècnica de Catalunya, 2005-05)
Tesina
Accés obert -
Multiphase gas transport in a shear zone
(Universitat Politècnica de Catalunya, 2007-07-09)
Tesi
Accés obertIn the post-operational phase of a Low/Intermediate-Low radioactive waste repository, gas will be generated in the caverns due to anaerobic corrosion of metals, and also chemical and microbial degradation of organic ... -
Multirate mass transfer and biofilm growth modeling in porous media
(Universitat Politècnica de Catalunya, 2021-07-23)
Tesi
Accés obertReactive transport modeling is a methodological tool to study the coupled physical, chemical and biological processes in Earth system. It is complex not only because of the nature of the equations, but also because of the ... -
Nomsothermal multiphase flow of brine and gas through saline media
(Universitat Politècnica de Catalunya, 1995-07-12)
Tesi
Accés obertPresentamos una formulación nueva para el análisis de problemas Termo-hidro-mecánicos en medios salinos. Esta formulación incluye, desde la obtención de ecuaciones de balance de masa, momento y energía hasta su resolución ... -
Occurrence and fate of emerging contaminants in urban groundwater. A case study : Barcelona
(Universitat Politècnica de Catalunya, 2013-10-21)
Tesi
Accés obertEnsuring good water quality is becoming a major challenge in urban areas. Urban aquifers may suffer pollution from different recharge sources such as water leakage from sewer and septic systems, seepage from rivers, seawater ... -
A reactive barrier to enhance the removal of emerging organic compounds during artificial recharge of aquifers through infiltration basins
(Universitat Politècnica de Catalunya, 2017-02-03)
Tesi
Accés obertArtificial recharge of aquifers through infiltration basins (AR) improves water quality and in- creases groundwater resources, which make of it an appropriate technique for the renaturalization of waters affected directly ... -
Recarga de acuíferos mediante agua de lluvia
(Universitat Politècnica de Catalunya, 2009-05-07)
Tesina
Accés obertL’objectiu principal d’aquest treball és realitzar una revisió bibliogràfica dels mètodes de filtració i recàrrega artificial d’aigua de pluja emprats en l’actualitat. Tot i que hi ha molts tipus d’aigua de pluja, es posarà ... -
Resolució del transport reactiu amb mètodes mixtes Eulerians - Lagrangians
(Universitat Politècnica de Catalunya, 2011-07-01)
Tesina
Accés obertHi ha molts fenòmens naturals (com ara degradació de contaminants, processos de dissolució i precipitació de minerals, etc.) que requereixen transport reactiu per la seva modelització. Aquesta modelització sol ser un ... -
Scaling of subsurface processes in heterogeneous aquifers: from hydraulic testing to the use of memory functions
(Universitat Politècnica de Catalunya, 2008-12-05)
Tesi
Accés obertLa heterogeneidad de la conductividad hidráulica es bien conocida, pudiendo cambiar varios órdenes de magnitud en poca distancia. Esto afecta nuestras observaciones de los procesos naturales. Para poder explicar la realidad ... -
Seawater intrusion in complex geological environments
(Universitat Politècnica de Catalunya, 2006-05-05)
Tesi
Accés obertModelling seawater intrusion (SWI) has evolved from a tool for understanding to a water management need. Yet, it remains a challenge. Difficulties arise from the assessment of dispersion coefficients and the complexity of ... -
Seawater intrusion, transition zone dynamics and reactive mixing : example of Argentona coastal alluvial aquifer
(Universitat Politècnica de Catalunya, 2021-07-19)
Tesi
Accés obertFreshwater quality and availability in coastal areas are affected by seawater intrusion into coastal aquifers. While coastal water quality and coastal ecosystems can be significantly affected by pollutants discharged into ... -
Sequence Stratigraphy as a tool for water resources management in alluvial coastal aquifers: application to the Llobregat delta (Barcelona, Spain)
(Universitat Politècnica de Catalunya, 2007-12-20)
Tesi
Accés obertMost coastal aquifers undergo seawater intrusion. Mitigating this risk depends on a sound knowledge of flow mechanisms, well located and constructed wells, an effective management, suitable policies and the desire to ...