Universitat Politècnica de Catalunya: Recent submissions
Now showing items 41-60 of 5840
A face-centred finite volume solver for viscous laminar incompressible flows using OpenFOAM
(English) Incompressible flow simulations are crucial for numerous scientific and engineering applications, from automotive aerodynamics to biomedical device design. Traditional finite volume (FV) methods, such as the ...
Aerodynamic shape optimization under uncertainties using embedded methods and adjoint techniques
(English) This thesis develops a framework to perform shape optimization under uncertainties for a body under the action of aerodynamic forces. The solution of the flow is performed with finite elements using the full ...
Power control and voltage quality enhancement on inverter-based AC microgrids
(English) Nowadays, the environmental concerns for conventional fossil fuel-based power generation are transforming the energy landscape into a more sustainable system. To this end, distributed generation (DG) units have ...
Innovative contributions to ionospheric scintillation monitoring using GNSS observations
(English) Ionospheric scintillation adversely impacts Global Navigation Satellite System (GNSS) receivers by inducing signal amplitude fading and rapid carrier phase variations, degrading positioning accuracy in regions ...
Quantum-gas microscopy of strontium Bose- and Fermi-Hubbard systems
(English) Ultracold atoms have proven to be a valuable asset to study and understand complex quantum many-body systems in a well-controlled setting. In particular, quantum-gas microscopes provide unprecedented access to ...
Design and implementation of high-level multilevel inverters: focusing on 15-level, 25-level, and 33-level topologies with asymmetrical configuration and optimal component choices
(English) The primary goal of this thesis is to establish multilevel inverter (MLI) topologies for industrial settings. Because of its numerous benefits, including low power dissipation on power supplies and low harmonic ...
Life cycle assessment as a tool for the industrialisation of chemical and mechanochemical processes
(English) The chemical sector is a $4 trillion global business and a major employer, with chemicals present in almost all manufactured products. Increasing investment and the chemical industry's innovative capacity to ...
Influence of household washing on the variation of the properties of intrinsic natural color organic cotton fabrics
(English) Natural colored organic cotton fabrics gained considerable attention in recent years owing to due to their environmental friendliness and sustainability production. This imparts unique colors and patterns to the ...
Multi-scale hydro-mechanical and gas transport characterisation of granular bentonite
(English) Bentonite-based materials with low permeability, great water retention and self-sealing properties have been extensively used for engineered barriers in waste disposal facilities. Several typologies of bentonites ...
Coordination of smart B5G radio access and autonomous optical transport networks
(English) Future radio access network (RAN) will operate with massive and heterogeneous small-cell deployments and end-to-end (e2e) connectivity in support of diverse beyond fifth-generation (B5G) use cases. More and more ...
Multi-regime combustion modelling in high-fidelity numerical simulations of reacting flows
(English) The quest to reduce carbon-based emissions has led to the use of alternative fuels and combustion systems. The aviation industry presents unique challenges due to the need for high-energy fuels, with e-fuels and ...
Evaluation of potential hazard due to off-stream reservoir failure using machine learning techniques
(English) Hazard classification for dams and off-stream reservoirs, which entails identifying potential damages in the event of structural failure, is a crucial tool for implementing local-level risk reduction plans. ...
A novel computational homogenization theory for multilayered plates: the multiscale 2D+ approach
(English) This doctoral thesis presents a novel multiscale theory for the analysis of multilayered plate structures, termed the "Multiscale 2D+ approach" or, simply, "2D+". Based on the formalism of computational ...
Control of floating offshore energy hubs
(English) The significant worldwide offshore potential has garnered considerable interest from energy companies and oil and gas plant owners in recent years. With significant advancements in bottom-fixed structures, floating ...
Development of algorithms for enhancing numerical simulations in CFD & HT: conjugate heat transfer, moving bodies, indoor air quality, and thermal energy storage
(English) This thesis consists of the enhancement of numerical simulations in CFD \& HT (Computational Fluid Dynamics and Heat Transfer). The contents are divided into three blocks: CFD numerical methods, indoor air quality, ...
Phycobiliprotein production with cyanobacteria-rich cultures and microbiomes
(English) Phycobiliproteins are pigments found in cyanobacteria, which are exploited in the food, cosmetic, and pharmaceutical industries. However, the large-scale production of these bio-based products has high production ...
Diseño de un modelo integrado para el empoderamiento individual y el apoyo social en la gestión del conocimiento de enfermedades crónicas
(English) This transdisciplinary research focuses on knowledge management and human capital development in the context of chronic diseases, investigating mechanisms of empowerment in virtual communities. Living with a ...
Barocaloric and multicaloric effects under hydrostatic pressure and electric field
(English) At present, HFC refrigerants with a global warming potential of thousands of times that of CO2, are widely used in air conditioners and, refrigerators. Due to lack of maintenance and poor management, and low or ...
Influence of interfacial bonding behavior on the compressive performance of sprayed mortar reinforced masonry walls
(English) This thesis investigates the adhesion behavior between sprayed mortar and masonry substrates, focusing on the influence of compressive strength, mortar age, and surface roughness on adhesion strength. Through ...
Exploring dissipative systems with non-Hermitian modulations
(English) The aim of this thesis is to explore the effect of non-Hermitian potentials in different nonlinear systems. Specifically, in the different sections of this work we focus on the stabilisation of various states. ...
