3D simulation of magneto-mechanical coupling in MRI scanners using high order FEM and POD 

    Seoane Chouciño, Marcos (Date of defense: 2020-07-15)

    Magnetic Resonance Imaging (MRI) scanners have become an essential tool in the medical industry due to their ability to produce high resolution images of the human body. To generate an image of the body, MRI scanners combine ...

    Advanced physics-based and data-driven strategies 

    Ibáñez Pinillo, Rubén (Date of defense: 2019-09-02)

    Simulation Based Engineering Science (SBES) has brought major improvements in optimization, control and inverse analysis, all leading to a deeper understanding in many processes occuring in the real world. These noticeable ...

    An approach for hydrogeological data management, integration and analysis 

    Criollo Manjarrez, Rotman A. (Date of defense: 2019-03-08)

    The conceptualisation of a groundwater system involves continuous monitoring and evaluation of a large number of parameters (e.g., hydraulic parameters). Regarding hydraulic properties of the aquifers, their quantification ...

    Analysis of the ocean dynamics in a wind-jet region using high-resolution models 

    Ràfols Bundó, Laura (Date of defense: 2018-09-13)

    The water currents and the wave field at the Catalan coast (in the Northwestern Mediterranean Sea) are investigated. However, the main research is focused at the northern margin of the Ebro Shelf, where there is a relatively ...

    Application of observability techniques to structural system identification including shear effects 

    Emadi, Seyyedbehrad (Date of defense: 2020-12-11)

    According to Timoshenko’s beam theory, nodal rotations in beam-like structures are produced by bending and shear effects. On the one hand, bending rotations can be easily calculated by the Euler-Bernoulli stiffness matrix ...

    Aproximación del transporte de contaminantes en aguas someras mediante elementos finitos de alto orden 

    Villota Cadena, Angel Patricio (Date of defense: 2020-07-09)

    The objective of the doctoral thesis is to perform the numerical approximation of the transient convection-diffusion-reaction (CDR) vector equation in 2D with high order finite elements, quadratic, cubic and fourth order, ...

    Assessment of dynamic aerosol-radiation interaction in atmospheric models 

    Obiso, Vincenzo (Date of defense: 2018-03-07)

    In this thesis an assessment of the parameterization of the Aerosol-Radiation Interaction (ARI) in online integrated meteorology-chemistry models has been conducted. The model estimates of ARI radiative effects are still ...

    Characterization and modelling of previous concrete 

    Pieralisi, Ricardo (Date of defense: 2016-04-13)

    Pervious concrete is a special material with high permeability usually obtained by reducing the amount of fine aggregates in the composition of concrete. The properties of pervious concrete not only depend on its composition ...

    Comparison and coupling of continuous and hybridizable discontinuous Galerkin methods : application to multi-physics problems 

    Paipuri, Mahendra (Date of defense: 2018-03-21)

    This thesis proposes a coupled continuous and hybridizable discontinuous Galerkin formulation to solve conjugate heat transfer problems. This model is then used to find the thermal response of Glass Fiber Reinforced Polymer ...

    Complexity reduction in parametric flow problems via Nonintrusive Proper Generalised Decomposition in OpenFOAM 

    Tsiolakis, Vasileios (Date of defense: 2020-01-31)

    The present thesis explores the viability of the proper generalised decomposition (PGD) as a tool for parametric studies in a daily industrial environment. Starting from the equations modelling incompressible flows, the ...

    Computational multiscale analysis of masonry structures 

    Petracca, Massimo (Date of defense: 2016-04-13)

    Masonry is an ancient building material that has been used throughout the history, and it is still used nowadays. Masonry constitutes the main building technique adopted in historical constructions, and a deep understanding ...

    Computational multiscale modeling of fracture and its model order reduction 

    Caicedo Silva, Manuel Alejandro (Date of defense: 2017-02-24)

    This thesis focuses on the numerical modeling of fracture and its propagation in heterogeneous materials by means of hierarchical multiscale models based on the FE2 method, addressing at the same time, the problem of the ...

    Computational uncertainity quantification in pressure-driven fracture processes 

    Garikapati, Hasini (Date of defense: 2020-03-28)

    Uncertainty quantification is important in assessing and predicting the performance of complex engineering systems and processes, especially in the absence of adequate experimental or real-world data. With the increase ...

    Coupling shallow water models with three-dimensional models for the study of fluid-structure interaction problems using the particle finite element method 

    Maso Sotomayor, Miguel (Date of defense: 2022-09-29)

    (English) This thesis investigates numerical methods for the simulation of surface water flows, focusing on the interaction between the large scale and the local scale and its application to natural hazards. Several families ...

    Discrete volume method : a variational approach for brittle fracture 

    Cardoso Nungaray, Víctor Eduardo (Date of defense: 2018-04-27)

    This thesis presents a proposal to simulate mechanics and dynamics of brittle fracture. A variational formulation is used to describe Lagrangian mechanics, by minimizing the difference between potential and kinetic energy ...

    Efficient simulation tools for real-time monitoring and control using model order reduction and data-driven techniques 

    Quaranta, Giacomo (Date of defense: 2019-09-02)

    Numerical simulation, the use of computers to run a program which implements a mathematical model for a physical system, is an important part of today technological world. It is required in many scientific and engineering ...

    Error estimation and adaptivity for PGD solutions 

    Reis, Jonatha Oliveira de Matos (Date of defense: 2020-12-29)

    A significant part of the current research efforts in computational mechanics is focused on analyzing and handling large amounts of data, exploring high dimensional parametric spaces and providing answers to increasingly ...

    Evaluating the impact of urban mobility policies on the air quality levels of Barcelona by means of an integrated modelling system 

    Rodríguez Rey, Daniel (Date of defense: 2022-03-21)

    Persistent high levels of NO2 have severe health effects on population. These are often found in large urban conurbations with high vehicle densities. In Barcelona, with one of the highest vehicle densities in Europe, the ...

    Experimental and numerical study of the effect of stress on ASR expansions in concrete 

    Liaudat, Joaquín (Date of defense: 2018-06-15)

    This thesis aims at deepening in the understanding of the mechanisms by which the stress state affects the development of concrete expansions and cracking due to the Alkali-Silica Reaction (ASR). With this purpose, a ...

    Extended hybridizable discontinuous Galerkin method 

    Gürkan, Ceren (Date of defense: 2018-11-22)

    This thesis proposes a new numerical technique: the eXtended Hybridizable Discontinuous Galerkin (X-HDG) Method, to efficiently solve problems including moving boundaries and interfaces. It aims to outperform available ...