Browsing by Subject "531/534"
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3D simulation of magneto-mechanical coupling in MRI scanners using high order FEM and POD
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 ...
A compressible Lagrangian framework for the simulation of underwater implosion problems
The development of efficient algorithms to understand implosion dynamics presents a number of challenges. The foremost challenge is to efficiently represent the coupled compressible fluid dynamics of internal air and ...
A dynamical model of a double-deck circular tunnel embedded in a full-space
This thesis presents a three-dimensional dynamic model of a double-deck circular tunnel embedded in a full-space. The model uses the receptance method to obtain the response of the complete structure from the response of ...
A hierarchical parallel implementation model for algebra-based CFD simulations on hybrid supercomputers
(English) Continuous enhancement in hardware technologies enables scientific computing to advance incessantly and reach further aims. Since the start of the global race for exascale high-performance computing (HPC), ...
A high-performance electromagnetic vibration energy harvester based on ring magnets with Halbach configuration: design, optimization, and applications
Electromagnetic vibration energy harvesting is a relatively modern technology that has received relevant attention in the last decade from the research community and industry as a potential complement or alternative to the ...
A novel arbitrary Lagrangian Eulerian framework for large strain solid dynamics
(English) In the realm of Computer-Aided Engineering applied to fast solid dynamics, the intricate mechanical behaviours exhibited by materials when subjected to strong dynamic forces, high speed impacts and complex ...
A Physics-Based Image Modelling of IVUS as a Geometric and Kinematics System
El uso de imágenes de UltraSonidoIntraVascular (IVUS) para la extracción de información cuantitativa sirve de gran ayuda en el diagnóstico y tratamiento de vasos arteroscleróticos. En la actualidad, esta clase de análisis ...
A theoretical and computational study of the interaction between biomembranes and curved proteins
Organelles are the smallest functional parts of eukaryotic cells. Among them, some are membrane-bound such as the nucleus, the endoplasmic reticulum, or the Golgi apparatus, each of them with essential biological functions. ...
Acció del vent sobre una estructura. Anàlisi teòric i experimental
Aquest treball s'estructura a partir d'una sèrie de reflexions que es contextualitza a partir de la voluntat de sistematitzar l'estudi de l'acció del vent sobre un edifici o una estructura. Després de diferents períodes ...
Active flow control methods for aerodynamic applications
The cylinder in cross flow has been the subject of many numerical and experimental studies since it provides a deep insight of the physical phenomena occurring in a wide range of flow regimes. Despite a number of investigations ...
Adaptive low and high-order hybridized methods for unsteady incompressible flow simulations
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 ...
Adaptive mesh refinement method for CFD applications
The main objective of this thesis is the development of an adaptive mesh refinement (AMR) algorithm for computational fluid dynamics simulations using hexahedral and tetrahedral meshes. This numerical methodology is applied ...
Adding expressiveness to unit selection speech synthesis and to numerical voice production
La parla és una de les formes de comunicació més naturals i directes entre éssers humans, ja que codifica un missatge i també claus paralingüístiques sobre l’estat emocional del locutor, el to o la seva intenció, esdevenint ...
Advanced 2.5D meshless methodologies to deal with soil-structure interaction problems in elastodynamics
This thesis is concerned with the development of efficient and practical numerical methodologies to deal with longitudinally invariant soil-structure interaction problems in elastodynamics. All the approaches appearing in ...
Advanced physics-based and data-driven strategies
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 ...
Advances in fibre Bragg grating sensors for damage detection in composite laminates: application in quasi-static and fatigue delamination tests
The use of composite materials in industrial applications such as aeronautical, aerospace or wind energy production has greatly increased in recent decades. Due to their inherent properties, these materials allow lighter, ...
An efficient methodology based on two-and-a-half-dimensional finite element and boundary element methods for ground-borne vibration radiated by underground railway tunnels and the re-radiated noise emitted inside them
This thesis presents a methodology for assessing induced ground-borne vibration due to Underground railway infrastructures in the context of an urban environment. The methodology is based on a comprehensive numerical ...
Analysis of the dynamic behaviour of rotating disk-like structures submerged and confined
The analysis of the dynamic behaviour of rotating turbomachinery components is of relevant interest to avoid damages or fatigue problems in these parts. To determine the dynamic behaviour of a part of a structure it is ...
Analysis of the effect of the small-scale turbulence on the phytoplankton dynamics in the open ocean. Modelling and numerical simulation in the vertical dimension.
Es tracta d'una tesi fonamentalment interdisciplinària que aborda l'anàlisi de la dinàmica fitoplanctònica, en condicions de mar obert i en termes de fixació de carboni, en funció de pressos estrictament físics com són la ...
Analysis of the suction chamber of external gear pumps and their influence on cavitation and volumetric efficiency
Hydraulic machines are faced with increasingly severe performance requirements. The need to design smaller and more powerful machines rotating at higher speeds in order to provide increasing efficiencies, has to face a ...
