Visualitzant per títol
Ara mostrant els elements 30667-30686 de 41897
Numerical Relativity studies in Anti-de Sitter spacetimes: Gravitational Collapse and the AdS/CFT correspondence
In this thesis we study several open problems using Numerical Relativity on asymptotically Anti-de Sitter (AdS) spacetimes. The understanding of the dynamics of AdS is interesting not only because of pure theoretical reasons ...
Numerical resolution of turbulent flows on complex geometries.
This thesis aims at developing a numerical methodology suitable for the direct numerical simulation (DNS) and large-eddy simulation (LES) of turbulent flows in order to be used in complex flows, currently encountered in ...
Numerical simulation and experimental validation of hermetic reciprocating compressors. Integration in vapour compression refrigerating systems
The numerical simulation model presented is based on the integration of the fluid conservation equations (continuity, momentum and energy) in the whole compressor domain (compression chamber, valves, manifolds, mufflers, ...
Numerical simulation and experimental validation of vapor compression refrigerating systems: special emphasis on natural refrigerants
The aim of this work is to study the thermal and fluid-dynamic behavior of vapor compression refrigerating systems and their constitutive elements (heat exchangers, expansion devices, compressors and connecting tubes) ...
Numerical simulation of flames using flamelet models
The thesis topic is located in the domain of numerical simulation of laminar flames. The principal aim of the presented research is the study of numerical techniques for the multidimensional simulation of flames with low ...
Numerical simulation of aeroacoustics using the variational multiscale method : application to the problem of human phonation
The solution of the human phonation problem applying computational mechanics is covered by several research branches, such as Computational Fluid Dynamics (CFD), biomechanics or acoustics, among others. In the present ...
Numerical simulation of bubbles and drops in complex geometries by using dynamic meshes
CFD techniques are important tools for the study of multiphase flows, because most of the physical phenomena of these flows often happen on space and time scales where experimental methodologies are impossible in practice. ...
Numerical simulation of cardiopulmonary resuscitation
L'aturada cardíaca és responsable d'un nombre significatiu de defuncions a Europa i als Estats Units, i la taxa de supervivència després d'una aturada cardíaca és baixa, per sota del 10 per cent. És important continuar ...
Numerical simulation of fatigue processes : application to steel and composite structures
The present thesis aims at advancing an innovative computational methodology that simulates steel and composite material fracture under cyclic loading following a phenomenological approach, with calibration from both small ...
Numerical simulation of fluid dynamics and transport phenomena in electrostatically charged volatile sprays
Els electrosprays estan constituïts de microgotes amb alta càrrega elèctrica i en moviment sota l'acció de forces electrostàtiques. Les gotes es generen com a resultat de la ruptura d'un doll de líquid sotmès a un camp ...
Numerical simulation of frost growth and densification using deformable and static grids
The present thesis aims at developing a basis for the numerical simulation of the growth and densification of macroscopic frost sheets. Notwithstanding the fact that icing has still a long way to fully understand its ...
Numerical simulation of multi-fluid flows with the Particle Finite Element Method
La presencia simultánea de múltiples fluidos con diferentes propiedades ocurre en numerosos problemas medioambientales, procesos industriales y situaciones de la vida diaria. Algunos ejemplos son la interacción fluido-combustible ...
Numerical simulation of multiphase flows : level-set techniques
This thesis aims at developing numerical methods based on level-set techniques suitable for the direct numerical simulation (DNS) of free surface and interfacial flows, in order to be used on basic research and industrial ...
Numerical simulation of multiphase immiscible flow on unstructured meshes
The present thesis aims at developing a basis for the numerical simulation of multiphase flows of immiscible fluids. This approach, although limited by the computational power of the present computers, is potentially very ...
Numerical simulation of Newtonian/non-Newtonian multiphase flows : deformation and collision of droplets
The complex nature of multiphase flows, particularly in the presence of non-Newtonian rheologies in the phases, limits the applicability of theoretical analysis of physical equations as well as setting up laboratory ...
Numerical Simulation of Non-premixed Laminar and Turbulent Flames by means of Flamelet Modelling Approaches
Deep knowledge of combustion phenomena is of great scientific and technological interest. In fact, better design of combustion equipments (furnaces, boilers, engines, etc) can contribute both in the energy efficiency and ...
Numerical simulation of oil spills in coastal areas using shallow water equations in generalised coordinates
The pollution generated by accidental marine oil spills can cause persistent ecological disasters and lead to serious social and economical damages. Numerical simulations are a valuable tool to make proper decisions in ...
Numerical simulation of sensible and latent thermal energy storage systems
El objetivo principal de esta tesis es la resolución numérica de problemas de transferencia de calor y dinámica de fluidos y su aplicación para el estudio del comportamiento transitorio de sistemas térmicos de acumulación ...
Numerical simulation of shallow water equations and some physical models in image processing
There are two main subjects in this thesis: the first one deals with the numerical simulation of shallow water equations, the other one is the resolution of some problems in image processing<br/><br/>The first part of this ...
Numerical simulation of the thermal and fluid dynamics behaviour of liquid-vapour two-phase flow in evaporators and condensers
Un estudio numérico del comportamiento térmico y fluido-dinámico de flujos bifásicos, liquido-gas, en conductos es presentado. El análisis numérico es basado en dos diferentes modelos. El primer modelo es conocido como ...
