Now showing items 31586-31605 of 43211
Geng, Linlin (Date of defense: 2021-01-28)
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 ...
Kazemi, Koorosh (Date of defense: 2023-05-12)
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 ...
Zhang, Hao (Date of defense: 2014-11-28)
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 ...
An, Bo (Date of defense: 2019-12-12)
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 ...
Colomer Rey, Guillem (Date of defense: 2006-06-26)
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 ...
Kanzaki Cabrera, Takeichi (Date of defense: 2013-11-29)
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 ...
Hou, Xiaofei (Date of defense: 2015-06-26)
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 ...
Valverde Pérez, Ángel (Date of defense: 2021-01-27)
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 ...
Crusat Codina, Laura (Date of defense: 2018-11-05)
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 ...
Zhan, Zhifeng (Date of defense: 2012-06-19)
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 ...
Wang, Yufei (Date of defense: 2022-07-11)
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 ...
Norouzi, MohammadJavad (Date of defense: 2024-01-15)
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 ...
Rodríguez Prieto, Juan Manuel (Date of defense: 2014-03-06)
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, ...
López Alonso, José Manuel (Date of defense: 2015-02-05)
Despite the large amount of research which has been conducted on turbulent flows, a full understanding of their dynamics as well as the mechanisms involved in the onset of turbulence is still missing. Experimental studies ...
Hospital Bravo, Raúl (Date of defense: 2021-07-05)
The design of offshore power stations (for wind, wave or tidal energy generation) requires assessing their environmental impact. In particular, it is of the major importance to predict the impact of the generated subsea ...
Zlotnik, Sergio (Date of defense: 2008-06-10)
Los modelos numéricos son una herramienta muy útil a la hora de estudiar la geodinámica de gran escala, la interpretación entre litosfera y manto o entre distintas placas tectónicas. En este trabajo se desarrolla una nueva ...
Bertó Roselló, Francisco (Date of defense: 2018-11-27)
Alguns materials mostren propietats físiques, òptiques i químiques particulars en la nanoescala. La nanotecnologia permet al científic millorar les seves propietats modificant l'estructura de la matèria en aquest nivell i ...
Badillo Almaraz, Hiram (Date of defense: 2012-04-16)
A multi-domain homogenization method is proposed and developed in this thesis based on a two-scale technique. The method is capable of analyzing composite structures with several periodic distributions by partitioning the ...
Hachicha, Ahmed Amine (Date of defense: 2013-09-30)
Concentrated Solar Power (CSP) technologies are gaining increasing interest in electricity generation due to the good potential for scaling up renewable energy at the utility level. Parabolic trough solar collector (PTC) ...
Pérez Foguet, Agustí (Date of defense: 2000-12-01)
La tesis se centra en el desarrollo de técnicas numéricas específicas para la resolución de problemas de mecánica de sólidos, tomando como referencia aquellos que involucran geomateriales (suelos, rocas, materiales ...