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+34 93 401 18 60Esta dirección de correo electrónico está siendo protegida contra los robots de spam. Necesita tener JavaScript habilitado para poder verlo.
UPC: C/ Jordi Girona 31, (08034 - Barcelona) - IDAEA: C/ Jordi Girona 18-26, (08034 - Barcelona)

Eventos y Seminarios

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Formación, cursos, eventos y seminarios

The dissolution kinetics of montmorillonite in acidic pH: experimental data and reactive transport (RT) modeling

a cargo de

Jordi Cama
Investigador Científico del CSIC

Jueves 23 de Noviembre a las 12:15 h
en
Departamento de Ingeniería del Terreno, Aula CIHS, Planta Baja


Abstract:
Well-mixed flow-through experiments are used to study the dissolution kinetics of K-montmorillonite at 25 °C, acidic pH (2-4) and 0.01 M ionic strength. The variations of Si, Al and Mg over time result in high releases of Si and Mg and Al deficit and also in long periods of incongruent dissolution before reaching stoichiometric steady state. 1D RT simulations of the experimental data are performed to quantitatively interpret the evolution of the released cations and to elucidate the stoichiometry of the reaction.

Non-Fickian transport in heterogeneous media: the role of disorder and spatial correlation

a cargo de
 
Alessandro Comolli

Jueves 16 de noviembre a las 12:15 h
en
Departamento de Ingeniería del Terreno, Aula CIHS, Planta Baja


Abstract:
Transport of solutes in heterogeneous media is in general non-Fickian. Traditional approaches based on the advection-dispersion equation fail in describing some characteristics of transport such as heavy-tailed breakthrough curves. In the last decades, a great effort has been made in order to show that the continuous time random walk (CTRW) model can effectively reproduce and predict transport in heterogeneous porous media. Nevertheless, several questions remain open. For instance, the impact of disorder and correlation on non-Fickian transport is not completely understood, as well as the mechanisms through which these sources of heterogeneity affect the average transport properties. In particular, understanding the role of spatial correlation is crucial in fractured systems and layered media, where transport is usually super-diffusive due to velocity persistency.
In this seminar, we show how it is possible to use CTRW models to describe transport in d-dimensional media characterised by strong spatial correlation and strong disorder in presence of both advection and diffusion. To quantify the impact of correlation and heterogeneity, we derive analytical solutions for the moments of particle displacements and for the breaktrough curves.

CURSO: AVANCES RECIENTES EN HIDROGEOLOGÍA CUANTITATIVA

Estimados profesionales, estudiantes y amigos

Jesús Carrera dictará el curso “Avances Recientes en Hidrogeología Cuantitativa” en Santiago, organizado por la AIH - CL, entre los días 4 al 7 de diciembre de 2017. En esta segunda comunicación enviamos los temas del programa y confirmamos capacidad para 30 personas.

 

 

TEMARIO DEL CURSO

El contenido del curso contempla los temas expuestos a continuación. El detalle se puede encontrar en este enlace.

  1. Flujo de aguas subterráneas
  2. Transporte de solutos en acuíferos
  3. Transporte reactivo
  4. Aplicación de lo anterior a la gestión de acuíferos
  5. El acoplamiento mecánico en hidrogeología

 

CUPOS, COSTO Y LUGAR
Se dispone de un total de 30 cupos.
El costo de la actividad será de CLP$ 380.000.- por persona.
Los socios de la AIH – Capítulo Chileno (a septiembre 2017) pagan el 50%.

El lugar será el Departamento de Geología de la Facultad de Ciencias Físicas y Matemáticas de la Universidad de Chile, ubicada en calle Plaza Ercilla 803, Santiago.

El horario será desde las 8.30 AM hasta las 18.45 horas, con pausas entre clases y para el almuerzo.

 

 

JESÚS CARRERA (PhD en Hidrología de la Universidad de Arizona, 1984) es coautor de más de 300 publicaciones, incluyendo artículos, capítulos de libros, conferencias y actas de congresos. Desde Julio de 2006 trabaja como Profesor de Investigación en el Instituto de Diagnóstico Ambiental y Estudios del Agua (IDAEA-CSIC), donde colaboran junto a la UPC (Barcelona) en el Grupo de Hidrología Subterránea. En su carrera investigando las aguas subterráneas ha recibido importantes premios, incluyendo la Darcy Medal en 2004 y el Príncipe Sultan Bin Abdulaziz en 2014. También es miembro de la Academia Europea de Ciencias.

 

Mixing and chemical reactions in multiphase systems

SEMINARIO GRUPO DE HIDROLOGIA SUBTERRÁNEA
(UPC-CSIC)
 
a cargo de

Joaquin Jimenez-Martinez
(ETH, Zurich)
 

Jueves 9 de Novembre a las 12:15 h
en
Departamento de Ingeniería del Terreno, Aula CIHS, Planta Baja


Abstract:
Porous and fractured media are often characterized by the coexistence of immiscible (e.g., water and air in soils) or partially miscible (e.g., water and oil with CO2 in reservoirs) phases. The complex spatial distribution of the phases can considerably complicate the flow dynamics with the development of regions of very low velocity, including regions where velocity is zero, and of preferential channels of high velocity. This highly heterogeneous velocity field makes transport, including mixing and chemical reactions, more complex. Mixing processes play a key role in controlling fluid-fluid chemical reactions. However, conventional continuum-scale theories and models oversimplify and/or ignore important micro-scale processes. I present recently proposed experimental developments (milli- and micro-fluidics) and theoretical approaches for a better mechanistic understanding of transport, mixing, and chemical reactions, and their coupling with multiphase flows.  

Ice in soils

SEMINARIO GRUPO DE HIDROLOGIA SUBTERRÁNEA
(UPC-CSIC)
a cargo de

Maarten Saaltink


Jueves 02 de Noviembre a las 12:15 h
en
Departamento de Ingeniería del Terreno, Aula CIHS, Planta Baja


Abstract:

Ice in soils can have important effects on hydrological processes. In soils the amount of ice and liquid water depend not only on temperature, but also on capillary pressures. This means, for instance, that a soil can contain liquid water at temperatures below freezing point. The modelcode CodeBright has been extended to include triphasic retention curves (ice, liquid water, air), so that it can simulate ice in unsaturated soils. The seminar will show some preliminary results of an application of this code to permafrost dynamics in the upper Tuul river basin (Mongolia).

Risk assessment models of groundwater pollution from contaminated sites

 
SEMINARIO GRUPO DE HIDROLOGIA SUBTERRÁNEA
 
a cargo de

Luca Locatelli (Technical University of Denmark)

Jueves 26 de Octubre a las 12:15 h
en
Departamento de Ingeniería del Terreno, Aula CIHS, Planta Baja


Abstract:

In Denmark more than 35000 contaminated sites are registered today. The available resources for site investigation and clean-up are limited compared to the large number of contaminated sites. Therefore, authorities face the challenge of prioritizing remediation efforts in order to ensure that the sites that pose the greatest risk to groundwater are remediated first. In this context, risk assessment is an important tool.
This project presents the development of risk assessment models to simulate the contaminant concentration in aquifers that are threatened by pollution from contaminated sites. The models simulate water phase concentrations from the contaminant source to a control point in the aquifer. Particularly, we present:
- a framework of 5 different conceptual models to simulate site specific conditions at contaminated sites.
- the conceptual and mathematical development of the different contaminant transport models. The models include the processes of advection, dispersion, fracture transport, gas diffusion and degradation.
- preliminary results of the model application to real case studies.
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