A hierarchical parallel implementation model for algebra-based CFD simulations on hybrid supercomputers 

    Álvarez Farré, Xavier (Date of defense: 2022-09-05)

    (English) Continuous enhancement in hardware technologies enables scientific computing to advance incessantly and reach further aims. Since the start of the global race for exascale high-performance computing (HPC), ...

    Adaptive mesh refinement method for CFD applications 

    Antepara Zambrano, Oscar Luis (Date of defense: 2019-01-10)

    The main objective of this thesis is the development of an adaptive mesh refinement (AMR) algorithm for computational fluid dynamics simulations using hexahedral and tetrahedral meshes. This numerical methodology is applied ...

    Developing numerical methods for fully-coupled nonlinear fluid-structure interaction problems 

    Naseri, Alireza (Date of defense: 2019-07-22)

    This thesis is dedicated to developing numerical methods to solve fluid-structure interaction (FSI) problems. FSI features in a vast range of physical systems and has a wide application in engineering. The work of this ...

    Development of a finite volume method for elastic materials and fluid-solid coupled applications 

    González Acedo, Ignacio (Date of defense: 2019-04-12)

    This thesis presents the development of a parallel finite volume numerical method to analyse thermoelastic and hyperelastic materials and applied problems with mutual interaction between a fluid and a structure. The ...

    Efficient CAD based adjoint optimization of turbomachinery using adaptive shape parameterization 

    Sanchez Torreguitart, Ismael (Date of defense: 2019-05-23)

    The present thesis incorporates the CAD model into an adjoint-based optimization loop and uses it for the shape optimization of a 2D transonic turbine blade mid-section (profile). This is demonstrated by performing a single ...

    Filtering in the numerical simulation of turbulent compressible flow with sysmmetry preserving discretizations 

    Baez Vidal, Aleix (Date of defense: 2019-01-10)

    The present thesis investigates how explicit filters can be useful in numerical simulations of turbulent, compressible flow with symmetry preserving discretizations. Such explicit filters provide stability to simulations ...

    Flow topology and small-scale dynamics in turbulent Rayleigh-Bénard convection 

    Dabbagh, Firas (Date of defense: 2017-09-06)

    Without fluid turbulence, life might have rather different look. The atmosphere and oceans could nearly maintain a much larger temperature differences resulting in ultimate heating or cooling to the earth surface. The water ...

    Heat transfer and fluid-dynamics in double and single skin facades 

    Faggembauu, Débora (Date of defense: 2006-12-19)

    Una proporción muy importante del presupuesto energético total de los países europeos es destinado al consumo energético del sector de la edificación, tanto en el ámbito doméstico como terciario. Debido a que esta tendencia ...

    High-order finite volume method for solid dynamics in fluid-structure interaction applications 

    Castrillo Green, Pablo (Date of defense: 2023-02-24)

    (English) This thesis aims at developing a high-order finite volume method for solid dynamics on unstructured three-dimensional meshes. The adoption of high-order interpolation methods has a key importance in the efficient ...

    Modelling and numerical simulation of combustion and multi-phase flows using finite volume methods on unstructured meshes 

    Muela Castro, Jordi (Date of defense: 2018-04-11)

    The present thesis is devoted to the development and implementation of mathematical models and numerical methods in order to carry out computational simulations of complex heat and mass transfer phenomena. Several areas ...

    A new grey area mitigation technique for DES : theory and assessment 

    Pont Vilchez, Arnau (Date of defense: 2020-12-17)

    The use of hybrid RANS-LES methods has become widespread during the last decade, as an interesting approach for covering the gap between RANS and LES turbulence models in terms of both computational resources and degree ...

    Numerical analysis and experimental studies of vapour compression refrigerating systems: special emphasis on different cycle configurations 

    Sadurní Caballol, Alexandre (Date of defense: 2012-09-28)

    The aim of this work is to study the thermal behavior and fluid-dynamic systems, vapor compression refrigeration and its components (heat exchangers, expansion devices, compressors, connecting pipes, pumps and pressure ...

    Numerical modelling of a parabolic trough solar collector 

    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) ...

    Numerical simulation and experimental validation of hermetic reciprocating compressors. Integration in vapour compression refrigerating systems 

    Rigola Serrano, Joaquim (Date of defense: 2002-09-27)

    The numerical simulation model presented is based on the integration of the fluid conservation equations (continuity, momentum and energy) in the whole compressor domain (compression chamber, valves, manifolds, mufflers, ...

    Numerical simulation of flames using flamelet models 

    Ahmad, Shamshad (Date of defense: 2017-04-06)

    The thesis topic is located in the domain of numerical simulation of laminar flames. The principal aim of the presented research is the study of numerical techniques for the multidimensional simulation of flames with low ...

    Numerical simulation of bubbles and drops in complex geometries by using dynamic meshes 

    Gutiérrez Álvarez, Enrique (Date of defense: 2018-07-17)

    CFD techniques are important tools for the study of multiphase flows, because most of the physical phenomena of these flows often happen on space and time scales where experimental methodologies are impossible in practice. ...

    Numerical simulation of frost growth and densification using deformable and static grids 

    Bartrons Casademont, Eduard (Date of defense: 2018-10-05)

    The present thesis aims at developing a basis for the numerical simulation of the growth and densification of macroscopic frost sheets. Notwithstanding the fact that icing has still a long way to fully understand its ...

    Numerical simulation of Newtonian/non-Newtonian multiphase flows : deformation and collision of droplets 

    Amani, Ahmad (Date of defense: 2019-07-24)

    The complex nature of multiphase flows, particularly in the presence of non-Newtonian rheologies in the phases, limits the applicability of theoretical analysis of physical equations as well as setting up laboratory ...

    Numerical Simulation of Non-premixed Laminar and Turbulent Flames by means of Flamelet Modelling Approaches 

    Claramunt Altimira, Kilian (Date of defense: 2005-02-18)

    Deep knowledge of combustion phenomena is of great scientific and technological interest. In fact, better design of combustion equipments (furnaces, boilers, engines, etc) can contribute both in the energy efficiency and ...

    On the development of direct numerical simulations for falling films 

    Valle Marchante, Nicolás (Date of defense: 2021-01-07)

    Multiphase flows present a rich variety of physical instabilities, which may turn into a set of interesting techonological features. In the particular case of vertical fallings films, these features provide with short ...