Programa de Doctorat en Enginyeria Civil: Recent submissions
Now showing items 121-140 of 186
Wave propagation problems with aeroacoustic applications
The present work is a compilation of the research produced in the field of wave propagation modeling. It contains in-depth analysis of stability, convergence, dispersion and dissipation of spatial, temporal and spatial-temporal ...
Evolución temporal de la vegetación en el Sahel mediante el NDVI y su relación con la precipitación en el periodo 1983-2012
The development and population prosperity in the transition zone between the Sahara desert in the north and the tropical humid savannah in the south, known as Sahel, depends to a great extent on the rainfall regime. The ...
Estimación de la producción y transporte de sedimentos en cuencas urbanas pequeñas a escala de evento mediante un modelo de base física basado en SIG
Huge modifications have been made to landscape or urban watersheds, especially in twentieth century, caused by increases in urbanization have led to progressive increases in runoff flows and therefore sediment production. ...
Mixing and speciation algorithms for geochemical and reactive transport problems
Geochemical 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 ...
Experimental design and verification of a centralized controller for irrigation canals
This thesis aims to develop a predictive control for irrigation canals to improve the management of water resources. Water is necessary for life and it is a scarce good that we need for drinking, in the agriculture, etc. ...
Error assessment and adaptivity for structural transient dynamics
The finite element method is a valuable tool for simulating complex physical phenomena. However, any finite element based simulation has an intrinsic amount of error with respect to the exact solution of the selected ...
A nanoscale study of dissolution and growth processes in cement hydrates
This thesis aims at providing new knowledge on the, otherwise poorly known, molecular-scale mechanisms that operate during hydration of cement phases and dissolution of their hydrates. In order to pursue this objective, a ...
Dissolution kinetics of C-S-H gel and durability of mortar
The use of concrete in disposal facilities to store low- and intermediate-level nuclear waste requires that the durability of this material is optimal for the lifetime of these repositories. One of the most important ...
Phase-field modeling of fracture in ferroelectric materials
The unique electro-mechanical coupling properties of ferroelectrics make them ideal materials for use in micro-devices as sensors, actuators and transducers. Nevertheless, because of the intrinsic brittleness of ferroelectrics, ...
Nonlinear subgrid finite element models for low Mach number flows coupled with radiative heat transfer
The general description of a fluid flow involves the solution of the compressible Navier-Stokes equations, a very complex problem whose mathematical structure is not well understood. It is widely accepted that these equations ...
Flujo desbordado en ríos con llanuras de inundación : cálculo de la capacidad hidráulica en cauces compuestos de planta recta y meandriforme : aplicación a la modelación numérica
El flujo desbordado en secciones de ríos con llanuras de inundación (secciones compuestas) presenta fuertes fenómenos tridimensionales que lo diferencian del flujo confinado en el cauce principal (asimilable a secciones ...
In-sewer organic sediment transport : study of the release of sediments during wet-weather from combined sewer systems in the Mediterranean region in Spain
The accumulation of sediments in combined sewer systems may give rise to significant quality problems, which sometimes are overlooked. Solids deposited in the network may lead to more frequent overflows into natural waters, ...
Approximation of phase-field models with meshfree methods: exploring biomembrane dynamics
Las biomembranas constituyen la estructura de separación fundamental en las celulas animales, y son importantes en el diseño de sistemas bioinspirados. Su simulación presenta desafíos, especialmente cuando ésta implica ...
Un modelo de discontinuidades fuertes para la simulación numérica de la fractura en compresión, de piezas de hormigón armado en tres dimensiones
This paper presents a numerical approach for the simulation of reinforced concrete pieces in three dimensions, using embedded discontinuity elements, based on the strong discontinuity approach. In turn, this work is divided ...
Strategies for improving import yard performance at container marine terminals
The process of containerization and its continuous development involves changes and technological innovations in containerships and maritime container terminals. In the current era of "gigantism", despite existing fleet ...
Effects of climate change on wave climate and consequent coastal impacts : application to the Catalan coast (NW Mediterranean Sea)
Climate change is a hot research topic due to the consequent impacts on our environment in the near future. The last report of the International Panel on Climate Change' the leading international body for assessment of ...
Spaceborne SAR imagery for monitoring the inundation in the Doñana wetlands
The Doñana wetlands, in Southwest Spain, undergo yearly cycles of inundation in fall and drying out during the spring season. As any wetland ecosystem, Doñana depends critically on its water resources. Important monitoring ...
Sediment-water interaction in a water reservoir affected by acid mine drainage : experimental and modeling
The discharge of acid mine drainage into a water reservoir may seriously affect the water quality. In this setting, sediment is commonly thought to act as a sink for pollutants. However, redox oscillations in the bottom ...
Tractament de la incertesa en estimació i previsió de pluja amb radars meteorològics
This thesis deals with uncertainty in radar-based precipitation estimation and nowcasting in two ways: its quantification in a probabilistic manner, and its reduction in the precipitation estimates. A straightforward way ...
Stabilized finite element formulations for solving incompressible magnetohydrodynamics
Magnetohydrodynamics (MHD) is the physics branch that studies electrically conducting fluids under external magnetic fields. This thesis deals with the numerical approximation using stabilized finite element methods of two ...
