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Now showing items 30596-30615 of 41831
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
Vegeu dris1de1resum.pdf
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 ...
Numerical modeling of continental collision and intraplate deformation. Application to the Cenozoic geodynamic evolution of North Iberia
This thesis aims at improving the current understanding of the geodynamic controls on tectonic deformation during plate collision, using the Cenozoic evolution of Iberia as a case scenario. Despite the vast efforts during ...
Numerical modeling of cracking along non-preestablished paths
The general objective of this thesis is the numerical representation of discrete cracks and their propagation using concepts of Configurational Mechanics, in such a way that their trajectory really corresponds to an energy ...
Numerical modeling of delayed and progressive failure in stiff clays with two-stage softening behaviour
Based on the laboratory, field and numerical results, the post-rupture strength defined firstly by Burland (1990) is verified and introduced in this thesis to describe the two-stage post-peak strain-softening characteristics ...
Numerical modeling of geological carbon sequestration : enhanced dissolution in randomly heterogeneous media
Geological Carbon Sequestration (GCS) plays a major role in mitigating the global warming due to the increasing concentration of CO2 in atmosphere. It is important to understand the GCS process to analyze and predict its ...
Numerical modeling of high aspect ratio fibers in fluid flows
Aquesta tesi utilitza un model de fibra a nivell de partícules per estudiar les suspensions de fibres en fluxos de fluids. En aquest model, cada fibra es representa com una cadena de segments cilíndrics connectats per ...
Numerical modeling of metal cutting processes using the Particle Finite Element Method
Metal cutting or machining is a process in which a thin layer or metal, the chip, is removed by a wedge-shaped tool from a large body. Cutting is a complex physical phenomena in which friction, adiabatic shear bands, ...
