Programa de Doctorat en Enginyeria Civil: Envíos recientes
Mostrando ítems 101-120 de 174
Experimental and theoretical analysis of cracking in drying soils
The thesis focuses on the experimental and theoretical aspects of the process of cracking in drying soils. The results and conclusions were drawn from an exhaustive experimental campaign characterised by innovative ...
Methodology for optimal design of efficient air transport network in a competitive environment
This thesis aims to dissert about air transport network design taking into consideration the current needs about efficiency in a very competitive industry. The main focus for this work is the airline's point of view and ...
Monitoring water, sanitation and hygiene services : developing tools and methods to measure sustainable acces and practice at the local level
Water and sanitation improvements together with good hygiene (WaSH) have well-known positive impacts on human development and poverty alleviation. However, universal access to safe drinking water and basic sanitation remains ...
Estudio del anclaje por adherencia y el comportamiento a flexión de refuerzos con laminados de fibras de carbono en elementos estructurales de hormigón armado
External reinforcement techniques with CFRP laminate adhered to concrete elements have advanced greatly over the past decade, obtaining a more effective method further lightweight and reliable. These advances have resulted ...
Local scale air quality model system for diagnostic and forecasting simulations using the finite element method
Air pollution is an important topic with a great social impact; it is related with public health, environment and ecology, and climate change. Scientists have developed several models in the last thirty years, and regional ...
Drought and flash floods risk assessment methodology
Floods and Drought are some of the most catastrophic natural disasters for humanity, averaging 1 to 5 billion dollar of annually damage for flood events and 6 to 8 billion dollars respectively for drought events. To avoid ...
Tsunamis provoked by fast granular landslides : 3D laboratory experiments on generation and initial propagation of waves
Landslides and debris flows falling into reservoirs, natural lakes, fjords or seas can generate impulsive waves, which can be assimilated to tsunamis. This phenomenon, also known as "landslide tsunami", can be highly ...
Distribución de temperatura y velocidad de embalses : análisis numérico-experimental aplicado a los embalses de Sau (Ter) y Ribarroja (Ebro)
The presence of a reservoir and its construction generate a direct impact in the rivers and in the surrounding landscape. The effects of the existing reservoirs, plus the combination of these with power plants (that use ...
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, ...
