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Now showing items 30472-30491 of 41660
Numerical analysis of railway ballast behaviour using the Discrete Element Method.
The development of high-speed train lines has increased significantly during the last twenty-five years, leading to more demanding loads in railway infrastructures. Most of these infrastructures were constructed using ...
Numerical and experimental analyses of single and two-phase microfluidic flows with implications in microreactors
Aquesta tesi centra els seus esforços en l'àmbit de la microfluídica, un camp relativament recent dins de la Mecànica de Fluids, amb un futur prometedor i amb un ritme d'investigació intens en les seves diferents ...
Numerical and experimental investigation of spectral domain vibration based indicators for structural health monitoring
Structural health monitoring has been defined as the acquisition, validation and analysis of technical data to facilitate life- cycle management decisions. It is the result of a convergent path from many previous existing ...
Numerical and experimental study of a flat plate collector with honeycomb transparent insulation and overheating protection system
In this thesis a flat plate collector (FPC) with plastic transparent insulation materials (TIM) and a low-cost overheating protection system destined for heat supply from 80 to 120°C is presented. A ventilation channel ...
Numerical and experimental study of flow and wall mass transfer rates in capillary driven flows in microfluidic channels
Micro-channels are believed to open up the prospect of precise control of fluid flow and chemical reactions. The capillary effect can be used to pump fluids in micro-channels and the flow generated can dissolve chemicals ...
Numerical and Experimental Study of Glass in the Blow and Blow Forming Process for the Prediction of Thickness Distributions in Glass Perfume Containers
El disseny del motlle preparador és un punt crític en el desenvolupament de nous flascons ja que defineix la distribució d’espessors de vidre en les ampolles fabricades. Tot i això, el disseny d’aquestes cavitats encara ...
Numerical and experimental study of steady and unsteady mixed convection flow in a cubical open cavity with the bottom wall heated
En aquest estudi s'analitzen els experiments i simulacions numèriques del flux de convecció mixta en una cavitat cúbica situada a la part inferior d'un canal quadrat. Els nombres de Reynolds en funció de la velocitat mitjana ...
Numerical and experimental study of transient laminar natural convection of high prandtl number fluids in a cubical cavity
NUMERICAL AND EXPERIMENTAL STUDY OF TRANSIENT LAMINAR NATURAL CONVECTION OF HIGH PRANDTL NUMBER FLUIDS IN A CUBICAL CAVITY<br/>Obai Younis Taha Elamin<br/><br/>La convección natural en espacios cerrados, se encuentra ...
Numerical approach for modeling steel fiber reinforced concrete
One alternative to overcome the main drawbacks of plain concrete in tension (its brittleness and weakness) is Steel Fiber Reinforced Concrete (SFRC), a technique introduced in the 70's, which consists of adding steel fibers ...
Numerical calculation model for the global analysis of concrete structures with masonry walls
The numerical simulation in the field of civil engineering, while widely used in structural design, has not benefited from the full potential offered by new technologies for the analysis and design of composite materials ...
Numerical computation and avoidance of manipulator singularities
This thesis develops general solutions to two open problems of robot kinematics: the exhaustive computation of the singularity set of a manipulator, and the synthesis of singularity-free paths between given configurations. ...
Numerical computation of invariant objects with wavelets
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Numerical formulation of physical phenomena in nanoparticles for their application to nanofluids
This thesis presents a numerical formulation grounded on continuum physics to study different coupled phenomena, such as thermomechanics and high-frequency thermoelectricity, in nanoparticles for their use in nanofluids ...
Numerical investigation and modelling of the unsteady behavior and erosion power of cloud cavitation
Cloud cavitation is a unwanted phenomenon taking place in many hydraulic machines which damages the surfaces of the solid walls due to the erosive aggressiveness induced by the collapse process. Therefore, it is necessary ...
Numerical investigation of a single bubble and a pair of bubbles rising in Newtonian and non Newtonian fluids with interfacial passive scalar transfer
Aquesta tesi explora el comportament de les bombolles i la seva interacció amb fluids en diferents processos industrials. L'estudi es centra en la dinàmica d'elevació d'una bombolla de gas única i d'un parell de ...
Numerical investigation of particle-fluid interaction system based on discrete element method
This thesis focuses on the numerical investigation of the particle-fluid systems based on the Discrete Element Method (DEM). The whole thesis consists of three parts, in each part we have coupled the DEM with different ...
Numerical investigation on applications simulated via using lattice Boltzmann method
The present doctoral thesis is about the numerical investigation simulated via using lattice Boltzmann method (LBM), the applications cover a large scale of subjects, including 1. Mathematical-physical equations A new ...
Numerical methods for radiative heat transfer
L'objectiu principal d'aquesta tesi es l'estudi de la transferència d'energia per radiació. Per aquest motiu, s'ha estudiat la fenomenologia bàsica de la transferencia de calor per radiació. Tenint en compte el tipus ...
Numerical modeling of anisotropic granular media
Granular materials are multi-particle systems involved in many industrial process and everyday life. The mechanical behavior of granular media such as sand, coffee beans, planetary rings and powders are current challenging ...
Numerical modeling of complex heat transfer phenomena in cooling applications
Multiphase and multicomponent flows are frequently encountered in the cooling applications due to combined heat transfer and phase change phenomena. Two-fluid and homogeneous mixture models are chosen to numerically study ...
