Now showing items 59-75 of 75

    Parallel algorithms for computational fluid dynamics on unstructured meshes 

    Borrell Pol, Ricard (Date of defense: 2012-10-31)

    La simulació numèrica directa (DNS) de fluxos complexes és actualment una utopia per la majoria d'aplicacions industrials ja que els requeriments computacionals son massa elevats. Donat un flux, la diferència entre els ...

    Parallel multigrid algorithms for computational fluid dynamics and heat transfer 

    Soria Guerrero, Manel (Date of defense: 2000-07-18)

    The main purpose of the dissertation is to contribute to the development of numerical techniques for computational heat transfer and fluid flow, suitable for low cost (loosely coupled) parallel computers. It is focused on ...

    Parallel object-oriented algorithms for simulation of multiphysics : application to thermal systems 

    López Mas, Joan (Date of defense: 2016-02-05)

    The present and the future expectation in parallel computing pose a new generational change in simulation and computing. Modern High Performance Computing (HPC) facilities have high computational power in terms of operations ...

    Parallel optimization algorithms for high performance computing : application to thermal systems 

    Aizpurua Udabe, Imanol (Date of defense: 2017-03-31)

    The need of optimization is present in every field of engineering. Moreover, applications requiring a multidisciplinary approach in order to make a step forward are increasing. This leads to the need of solving complex ...

    Performance indicators for the dynamics modeling and control of PEMFC systems 

    Husar, Attila Peter (Date of defense: 2012-03-07)

    Society is gradually becoming aware that the current energy industry, based on the use of fossil fuels, is inefficient, highly polluting and has a finite supply. Within the scientific community, there are indications ...

    Real-time nonlinear model predictive control for thermal management in a plug-in hybrid electric vehicle 

    López Sanz, Jorge (Date of defense: 2016-07-01)

    Several socioeconomic factors are leading governments to encourage electric powered vehicles. Currently, the bottleneck for electric vehicles mass production lies in the high voltage battery technology. One of the main ...

    Resolución numérica de fenómenos convectivos con condiciones de contorno periódicas. Aplicación a aislamientos transparentes 

    Quispe Flores, Marcos Oswaldo (Date of defense: 2003-12-12)

    Se ha desarrollado una infraestructura numérica, que permite el estudio de problemas donde están presentes fenómenos periódicos espaciales, haciendo uso de dominios computacionales reducidos con condiciones de contorno ...

    Simulación numérica y validación experimental de evaporadores, condensadores y tubos capilares. Integración en sistemas de refrigeración por compresión 

    García Valladares, Octavio (Date of defense: 2000-07-18)

    La presente Tesis centra la atención en la simulación numérica y validación experimental del comportamiento térmico y fluido-dinámico de flujos bifásicos (líquido-vapor), así como su aplicación en sistemas y equipos térmicos, ...

    Simulation of heat and mass transfer phenomena in the critical elements of H2O-LiBr absorption cooling machines. Experimental validation and application to design 

    Castro González, Jesús (Date of defense: 2005-05-06)

    Degut a la tendència a l'increment del preu de la energia, i el seu ús cada cop més estès per aire condicionat en els paisos desenvolupats, els sistemes de refrigeració basats en energia solar tenen cada cop més atractiu. ...

    Sistema de Inyección no cartográfico para motores de ciclo otto. Gestión de transitorios 

    Gutiérrez González, Ernesto (Date of defense: 2003-01-17)

    .<br/>Se desarrolla un Sistema de Gestión de la Inyección Secuencial de Combustible en el Colector de Admisión del motor de ciclo Otto, el cual basa su gestión en tres señales analógicas que definen: la composición de la ...

    Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents 

    Comaposada i Beringues, Josep (Date of defense: 1999-10-04)

    El pernil curat és actualment el producte càrnic més important a nivell d'Espanya. En l'elaboració d'aquest producte, l'assecat és la part més costosa i la que requereix la major part del temps del procés. D'aquí sorgeix ...

    Study of the exfoliation process in epoxy-clay nanocomposites 

    Shiravand, Fatemeh (Date of defense: 2014-06-03)

    Cured epoxy resins are highly cross-linked polymers which are increasingly important in high performance engineering field due to the stiffness, high strength, heat resistance and solvent resistance. However one major ...

    Subenfriadores criogénicos nitrógeno: aportación a la metodología para el diseño 

    Ruiz Mansilla, Rafael (Date of defense: 1994-10-24)

    Se establece la metodología, incluyendo la formulación necesaria, para el diseño térmico de subenfriadores criogénicos n2(i)-n2(i), observando en todo momento criterios de optimización para con los diferentes parámetros y ...

    Suitability of different RANS models in the description of turbulent forced convection flows: application to air curtains 

    Jaramillo Ibarra, Julián Ernesto (Date of defense: 2008-10-17)

    The main motivation of this thesis is the analysis of turbulent flows. Turbulence plays an important role in engineering applications due to the fact that most flows in industrial equipment and surroundings are in turbulent ...

    Three-dimensional numerical simulation of fluid flow and heat transfer in fin-and-tube heat exchangers at different flow regimes 

    Paniagua Sánchez, Leslye (Date of defense: 2014-07-30)

    This thesis aims at unifying two distinct branches of work within the Heat Transfer Technological Center (CTTC). On one side, extensive experimental work has been done during the past years by the researchers of the ...

    Towards a virtual platform for aerodynamic design, performance assessment and optimization of horizontal axis wind turbines 

    Martínez Valdivieso, Daniel (Date of defense: 2017-03-31)

    This thesis focuses on the study and improvement of the techniques involved on a virtual platform for the simulation of the Aerodynamics of Horizontal Axis Wind Turbines, with the ultimate objective of making Wind Energy ...

    Unsteady laminar convection in cylindrical domains: numerical studies and application to solar water storage tanks 

    Rodríguez Pérez, Ivette (Date of defense: 2006-12-19)

    Los dispositivos de almacenamiento de energía térmica son ampliamente usados en diversos sistemas térmicos caracterizados por un desfase temporal entre la producción de energia y su consumo, como es el caso de los sistemas ...