A finite Element model for incompressible flow problems 

Codina Rovira, Ramon (Date of defense: 1992-06-30)

Adaptive hybrid discontinuous methods for fluid and wave problems 

Giorgiani, Giorgio (Date of defense: 2013-04-02)

This PhD thesis proposes a p-adaptive technique for the Hybridizable Discontinuous Galerkin method (HDG). The HDG method is a novel discontinuous Galerkin method (DG) with interesting characteristics. While retaining all ...

Development of fractional step methods for compressible flow solvers using variational multi-scale finite element formulations 

Parada Bustelo, Samuel (Date of defense: 2023-01-27)

(English) This thesis deals with finite element methods to solve compressible flow problems, an important branch of Computational Fluid Dynamics (CFD) whose applications are widespread in many areas of engineering and ...

Flujo desbordado en ríos con llanuras de inundación : cálculo de la capacidad hidráulica en cauces compuestos de planta recta y meandriforme : aplicación a la modelación numérica 

Martín Moreta, Pedro José (Date of defense: 2014-12-18)

El flujo desbordado en secciones de ríos con llanuras de inundación (secciones compuestas) presenta fuertes fenómenos tridimensionales que lo diferencian del flujo confinado en el cauce principal (asimilable a secciones ...

Modelación numérica integrada de los procesos hidráulicos en el drenaje urbano 

Aragón Hernández, José Luis (Date of defense: 2013-07-02)

El crecimiento continuo de las ciudades, o la ocurrencia de un evento extraordinario de lluvia, en muchas ocasiones sobrepasa las medidas de diseño de algunos de los elementos del drenaje urbano (principalmente elementos ...

Nonlinear subgrid finite element models for low Mach number flows coupled with radiative heat transfer 

Avila, Matías (Date of defense: 2012-11-16)

The general description of a fluid flow involves the solution of the compressible Navier-Stokes equations, a very complex problem whose mathematical structure is not well understood. It is widely accepted that these equations ...

Numerical approach for modeling steel fiber reinforced concrete 

Pros Parés, Alba (Date of defense: 2012-02-06)

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 modeling of delayed and progressive failure in stiff clays with two-stage softening behaviour 

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 ...

Phase-field modeling of fracture in ferroelectric materials 

Abdollahi, Amir (Date of defense: 2012-10-18)

The unique electro-mechanical coupling properties of ferroelectrics make them ideal materials for use in micro-devices as sensors, actuators and transducers. Nevertheless, because of the intrinsic brittleness of ferroelectrics, ...

Sistema de evaluación y priorización de inversiones públicas 

Boix Cots, David (Date of defense: 2023-12-15)

(English) This doctoral thesis addresses one of the most significant challenges facing the Spanish administration: the efficient selection and management of public investments. To achieve this goal, the 'Public Investment ...

Static and dynamic global stiffness analysis for automotive pre-design 

Cavaliere, Fabiola (Date of defense: 2022-04-06)

In order to be worldwide competitive, the automotive industry is constantly challenged to produce higher quality vehicles in the shortest time possible and with the minimum costs of production. Most of the problems with ...

Un modelo de discontinuidades fuertes para la simulación numérica de la fractura en compresión, de piezas de hormigón armado en tres dimensiones 

Díaz Ortíz, Guillermo Fernando (Date of defense: 2014-07-23)

This paper presents a numerical approach for the simulation of reinforced concrete pieces in three dimensions, using embedded discontinuity elements, based on the strong discontinuity approach. In turn, this work is divided ...

Unfittted finite element methods for explicit boundary representations 

Martorell Pol, Pere Antoni (Date of defense: 2024-02-21)

(English) This thesis covers the development of large-scale numerical methods for the simulations of partial differential equations on arbitrarily complex geometries. The target application of this thesis is the structural ...