Àrea de contingut
Universitat Politècnica de Catalunya
Browsing Programa de Doctorat en Enginyeria Tèrmica by Subject "004"
Now showing items 1-20 of 26
A hierarchical parallel implementation model for algebra-based CFD simulations on hybrid supercomputers
(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
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 ...
Aerodynamic analysis of complex geometries using CFD
Aerodynamic analysis has become one of the most important tools in many engineering applications. In this sense, this thesis work is aimed at performing aerodynamic analysis of different geometries, expanding the available ...
Computational modeling of adsorption packed bed reactors and solar-driven adsorption cooling systems
Environmental concerns regarding climate change and ozone depletion urge for a paradigm shift in the cooling production. The cooling demand exhibits an alarmingly increasing trend, thus its satisfaction in a sustainable ...
Developing numerical methods for fully-coupled nonlinear fluid-structure interaction problems
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
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 ...
Development of CFD-based multi-fidelity surrogate models for indoor environmental applications
This thesis presents a methodology for CFD-based multi-fidelity surrogate models for indoor environmental applications. The main idea of this work is to develop a model that has accuracy comparable to CFD simulations but ...
DNS of multiphase flows: study of atomization and free-surface phenomena
The present thesis focuses on the numerical analysis of some diverse physical set-up that involve the interaction of two -or three immiscible and incompressible phases. The simulations are carried out by means of finite-volume ...
Efficient wall modeling for large eddy simulations of general non-equilibrium wall-bounded flows
The main purpose of this thesis has been to contribute to the development of methodologies for wall modeling Large Eddy Simulations (LES) of wall-bounded flows, especially those at high Reynolds numbers. This flow configuration ...
Filtering in the numerical simulation of turbulent compressible flow with sysmmetry preserving discretizations
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
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 ...
Heterogeneous parallel algorithms for computational fluid dynamics on unstructured meshes
Frontiers of computational fluid dynamics (CFD) are constantly expanding and eagerly demanding more computational resources. Currently, we are experiencing an rapid evolution in the high performance computing systems driven ...
Modelling and numerical simulation of combustion and multi-phase flows using finite volume methods on unstructured meshes
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 ...
Multiphysics simulation in buildings
Numerical simulation play an important role in the design, engineering, operation and management of buildings. It can help reducing energy consumption, improving indoor air quality and thermal comfort and provide quantitative ...
A new grey area mitigation technique for DES : theory and assessment
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 simulation of bubbles and drops in complex geometries by using dynamic meshes
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
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 multiphase immiscible flow on unstructured meshes
The present thesis aims at developing a basis for the numerical simulation of multiphase flows of immiscible fluids. This approach, although limited by the computational power of the present computers, is potentially very ...
Numerical simulation of Newtonian/non-Newtonian multiphase flows : deformation and collision of droplets
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 sensible and latent thermal energy storage systems
El objetivo principal de esta tesis es la resolución numérica de problemas de transferencia de calor y dinámica de fluidos y su aplicación para el estudio del comportamiento transitorio de sistemas térmicos de acumulación ...
