Ara mostrant els elements 1-20 de 26

    A methodology for the design, implementation and evaluation of community and impact-based flood warnings 

    Meléndez Landaverde, Erika Roxana (Data de defensa: 2023-11-13)

    (English) The present thesis focuses on developing, implementing, and evaluating a comprehensive community and impact-based early warning system (EWS) framework to support the protection actions of authorities and citizens ...

    Adaptive low and high-order hybridized methods for unsteady incompressible flow simulations 

    Karkoulias, Alexandros (Data de defensa: 2020-06-17)

    Simulations of incompressible flows are performed on a daily basis to solve problems of practical and industrial interest in several fields of engineering, including automotive, aeronautical, mechanical and biomedical ...

    Advanced numerical techniques for inverse problems in geophysics 

    Ortega Gelabert, Olga (Data de defensa: 2020-12-18)

    This thesis presents an efficient methodology to couple Model Order Reduction techniques within the framework of geophysical probabilistic inversion problems. Accurate models of the interaction between Earth inner processes ...

    Approximation of phase-field models with meshfree methods: exploring biomembrane dynamics 

    Peco Regales, Christian (Data de defensa: 2014-10-28)

    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 ...

    Assessing the socio-economic impacts of flash floods for early warning at regional, national, and continental scales 

    Ritter, Josias Manuel Gisbert (Data de defensa: 2021-07-16)

    Flash floods are one of the most devastating natural hazards, claiming numerous lives and tremendous economic losses. One of the main reasons for their catastrophic potential is the limited time available for precautionary ...

    Development of mechanism-based models for resistance spot weld failure simulation of multi-material advanced high strength steel sheets 

    Dorribo Dorribo, Daniel (Data de defensa: 2017-12-05)

    The automotive industry is constantly involved in the development of new projects aimed at reducing weight, fuel consumptions and costs while improving passengers¿ safety. In order to achieve these increasing demands, ...

    Direct numerical simulation of multi-phase flow in complex media 

    Hashemi, Mohammad Reza (Data de defensa: 2022-02-22)

    In numerous applications, two-phase liquid-gas transport at sub-millimeter length scales plays a substantial role in the determination of the behavior of the system at hand. As its main application, the present work focuses ...

    Distribución de temperatura y velocidad de embalses : análisis numérico-experimental aplicado a los embalses de Sau (Ter) y Ribarroja (Ebro) 

    Arbat Bofill, Marina (Data de defensa: 2015-09-15)

    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 ...

    Experimental characterization of turbulance in steep rough streams 

    Fernández López, Cristina (Data de defensa: 2019-02-01)

    Torrential flows have so far been studied less than have river flows, due to the difficulty of faithfully reproducing them in the laboratory, and the few field measurements available. For this reason, this present research ...

    Experimental design and verification of a centralized controller for irrigation canals 

    Bonet Gil, Enrique (Data de defensa: 2015-03-26)

    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. ...

    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 

    Martín Moreta, Pedro José (Data de defensa: 2014-12-18)

    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 ...

    Hybrid CPU/GPU implementation for the FE2 multi-scale method for composite problems 

    Giuntoli, Guido (Data de defensa: 2020-01-30)

    This thesis aims to develop a High-Performance Computing implementation to solve large composite materials problems through the use of the FE2 multi-scale method. Previous works have not been able to scale the FE2 strategy ...

    Image processing and experimental techniques to characterize the hydraulic performance of grate inlets 

    Tellez Alvarez, Jackson David (Data de defensa: 2019-05-10)

    This Doctoral Thesis dissertation concerns two main research topic: the analysis of the flow velocity pattern in the nearness of a grate inlet through Surface Flow Image Velocimetry (SFIV) technique and the study of overflow ...

    Large scale finite element solvers for the large eddy simulation of incompressible turbulent flows 

    Colomés Gené, Oriol (Data de defensa: 2016-03-31)

    In this thesis we have developed a path towards large scale Finite Element simulations of turbulent incompressible flows. We have assessed the performance of residual-based variational multiscale (VMS) methods for the ...

    Large-scale tree-based unfitted finite elements for metal additive manufacturing 

    Miranda Neiva, Eric (Data de defensa: 2020-10-07)

    This thesis addresses large-scale numerical simulations of partial differential equations posed on evolving geometries. Our target application is the simulation of metal additive manufacturing (or 3D printing) with powder-bed ...

    Local scale air quality model system for diagnostic and forecasting simulations using the finite element method 

    Oliver Serra, Albert (Data de defensa: 2015-11-13)

    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 ...

    Modelación hidrológica distribuida basada en esquemas de volúmenes finitos 

    Caro Camargo, Carlos Andrés (Data de defensa: 2016-01-25)

    Distributed hydrological modeling occurs as a historical consequence of the different developments and advances in conceptual hydrology, first, through deepening and adaptation of hydrology through aggregated methods, and ...

    Modelling thermo-mechanical response of metal canister disposed in engineered barrier systems 

    Khadivipanah, Peiman (Data de defensa: 2022-02-03)

    The main objective of this thesis is to describe and implement a rate-dependent (viscoplastic) constitutive equations for copper based canister using a single internal state variable and use it for modelling disposal schemes ...

    New updated reference Lagrangian smooth particle hydrodynamics framework for large strain solid dynamics ans its extension to dynamic fracture 

    Refachinho de Campos, Paulo Roberto (Data de defensa: 2022-09-27)

    (English) This work presents a new updated reference Lagrangian Smooth Particle Hydrodynamics (SPH) algorithm for the analysis of large deformation by introducing a novel system of first order conservation laws. Both ...

    A parallel algorithm for deformable contact problems 

    Rivero, Matias Ignacio (Data de defensa: 2018-04-27)

    In the field of nonlinear computational solid mechanics, contact problems deal with the deformation of separate bodies which interact when they come in touch. Usually, these problems are formulated as constrained minimization ...