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Now showing items 30570-30589 of 41723
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 ...
Numerical simulation of turbulent diffusion flames using flamelet models on unstructured meshes
The present thesis aims at developing numerical methods and algorithms for the efficient simulation of diffusion flames in the flamelet regime. To tackle turbulent chemically reacting flows a double framework is used in ...
Numerical Simulation of Turbulent Flows. Multiblock Techniques. Verification and Experimental Validation
Work here presented is the result of basic research in key aspects of the currently available engineering tools and methodologies for the design, optimisation and development of thermal systems and equipment: turbulence ...
Numerical simulations of particle turbulent dispersion and deposition with implications for the spreading of airborne diseases
Aquesta tesi doctoral examina la dinàmica de partícules en fluxos turbulents mitjançant simulacions numèriques, enfocant-se en dos escenaris clau: els fluxos generats per l'exhalació i els impulsats per flotabilitat en ...
Numerical simulations of primordial black holes
This thesis has been devoted to the study of the gravitational collapse of spherically symmetric perturbations on a Friedman-Robertson-Walker (FRW) universe filled by a perfect fluid. Large cosmological perturbations ...
Numerical simulations of the DCMIX microgravity thermodiffusion experiments to assess the impact of typical International Space Station reboosting manoeuvres
En aquesta tesi s'ha analitzat l'impacte que les maniobres vehiculars impulsives (reboostings) de l'Estació Espacial Internacional (ISS) tenen sobre els experiments de la sèrie DCMIX. En primer lloc, l'entorn microgravitatorio ...
Numerical simulations of thermal storage systems : emphasis on latent energy storage using phase change materials (PCM)
The present thesis aims at studying the use of phase change materials (PCM) in thermal energy storage (TES) applications and to develop and implement numerical tools for their evaluation. Numerical analysis is nowadays an ...
Numerical solution of 3-D electromagnetic problems in exploration geophysics and its implementation on massively parallel computers
The growing significance, technical development and employment of electromagnetic (EM) methods in exploration geophysics have led to the increasing need for reliable and fast techniques of interpretation of 3-D EM data ...
Numerical study and experimental optimization of air curtains
he main objective of the present thesis is to study and optimize the sealing efficiency of air curtains. Therefore, the phenomenology of the breakthrough and the parameters which affect it has been studied. However, ...
Numerical study of bio-fluids and mass transfer processes through membranes
La reologia de la sang (hemoreología) exerceix un ppel important en la perforació de teixits i l'alteració de les seves condicions fisiològiques és gairebé sempre la principal causa de patologies cardiovasculars. Per tant, ...
Numerical study of hopf bifurcations in the two-dimensional plane poiseuille flow
In this work we try to analyse the dynamics of the Navier-Stokes equations in a problem without domain complexities as is the case of the plane Poiseuille flow. The Poiseuille problem is described as the flow of a viscous ...
Numerical study of intense cyclogenesis events in the Mediterranean basin
S'han estudiat diverses ciclogènesis mediterrànies mitjançant el model atmosfèric MM5,<br/>la inversió de vorticitat potencial per peces i la tècnica de la separació de factors. Els<br/>resultats mostren com a agents per ...
Numerical study of isothermal two-phase flow dispersion in the packed bed of a hydrodesulfurization reactor
El objetivo principal de este trabajo es predecir la dispersión de un flujo bifásico en el lecho de un reactor de hidrodesulfuración. Se consideran propiedades físicas constantes, sin incluir reacciones químicas ni procesos ...
Numerical study of the heat and mass transfer processes with the Lattice Boltzmann method: Laminar Mixed Convection in a Square Open C
El tema d’aquesta tesis és l’estudi numèric i implementació del mètode de Lattice Boltzmann utilitzant els models D2Q9 amb múltiples temps de relaxació (MTR), aquest model es aplicat en el camp de fluids, temperatura ...
Numerical study of the non-Oberbeck-Boussinesq effects in turbulent water-filled cavities
The work carried out in the framework of the present thesis aims at shedding light into the complex phenomena involved in turbulent water-filled cavities, questioning the validity of the well-established Oberbeck-Boussinesq ...
Numerical techniques for non-linear analysis of structures combining discrete element and finite element methods
This works encompasses a broad review of the basic aspects of the Discrete Element Method for its application to general granular material handling problems with special emphasis on the topics of particle-structure interaction ...
Numerical tools for computational design of acoustic metamaterials
The notion of metamaterials as artificially engineered structures designed to obtain specific material properties, typically unachievable in naturally occurring materials, has captured the attention of the scientific and ...
¿Numerus clausus? : crítica al sistema de incriminación de los delitos de las personas jurídicas
El Código penal español reconoce desde 2010 la responsabilidad penal de las personas jurídicas, aunque limitada a un catálogo cerrado de delitos. La configuración del sistema de numerus clausus -como sucede con la práctica ...
Nunca más un mundo sin nosotras: Identidades sociales y prácticas políticas desde mujeres tzeltales y tzotziles del estado de Chiapas, México
La tesis se centra en la comprensión de las interrelaciones entre la construcción de identidades sociales y las prácticas políticas de mujeres tzeltales y tzotziles del estado de Chiapas, México; considerando las condiciones ...
Nuovi interventi sul patrimonio archeologico: Un contributo alla definizione di un'etica del paesaggio = Nuevas intervenciones en el patrimonio arqueológico : una contribución a la definición de una ética del paisaje
The interest for archaeological ruins arises periodically ín the course of history and it expresses ít self through a continuous altemating of attitude towards the "ancient": approaching and moving away, memory and ...
