Envíos recientes

  • Effects of flow control on flow past bluff bodies 

    Mushyam, Aditya (Universitat Politècnica de Catalunya, 2016-11-23)
    Tesis
    Acceso abierto
    The aim of this Ph.D. thesis, "Effects of flow control on flow past bluff bodies" is to study and analyzes the effects of Flow Control on various aspects and proverbs of flow past bluff bodies. Flow control techniques are ...
  • Estudio de mezclas de refrigerantes para un circuito frigorífico aplicado a la deshumidificación del aire 

    Cánovas Bermejo, Catalina (Universitat Politècnica de Catalunya, 2016-01-21)
    Tesis
    Acceso abierto
    The present thesis is undertaken to study the use of an aqueous solution of LiCl as a secondary refrigerant, due to its dehydrating properties, in those refrigeration applications that require mainly the air dehumidification ...
  • Energy efficiency of high pressure pneumatic systems 

    Trujillo, José A. (Universitat Politècnica de Catalunya, 2015-11-27)
    Tesis
    Acceso abierto
    The energy efficiency assessment of high-pressure pneumatic circuits is the aim of this dissertation. From a historical perspective the past and cur- rent activities with regards to the energy saving conservation in pneumatic ...
  • Modelización de los procesos de conformado en caliente de los aceros microaleados de medio carbono mediante la aplicación de redes neuronales artificiales 

    Alcelay Larrión, José Ignacio (Universitat Politècnica de Catalunya, 2015-09-10)
    Tesis
    Acceso abierto
    In this thesis a study was performed to obtain a model of artificial neural network that is able to predict the flow behavior of steel under hot deformation conditions. The hot compression tests are performed on two types ...
  • Analysis of the dynamic behaviour of rotating disk-like structures submerged and confined 

    Presas Batlló, Alexandre (Universitat Politècnica de Catalunya, 2014-11-27)
    Tesis
    Acceso abierto
    The analysis of the dynamic behaviour of rotating turbomachinery components is of relevant interest to avoid damages or fatigue problems in these parts. To determine the dynamic behaviour of a part of a structure it is ...
  • Design tools applied to a trochoidal gear pump 

    García Vílchez, Mercedes (Universitat Politècnica de Catalunya, 2014-07-31)
    Tesis
    Acceso abierto
    Positive displacements pumps, as currently designed, produce significant flow pulsations that result in pressure pulsations. These pulsations contribute to the global noise generated by the installation. Moreover, they ...
  • Experimental investigation of induced supersonic boundary layer transition 

    Bottini, Henny (Universitat Politècnica de Catalunya, 2014-03-28)
    Tesis
    Acceso abierto
    Turbulence onset within an initially laminar flow is one of the most common phenomenon in Fluid Mechanics, yet is an open field of research. This is due to the many and diverse causes that can trigger turbulence, which ...
  • Fluid dynamic characterization of vortex generators and two-dimensional turbulent wakes 

    Fernández Gámiz, Unai (Universitat Politècnica de Catalunya, 2013-11-26)
    Tesis
    Acceso abierto
    The main objective of this PhD thesis is the fluid dynamic characterization of the flow behind vortex generators (VG) as well as to investigate their influence in the separation of the boundary layer. CFD simulations have ...
  • Influence of cavitation on the dynamic response of hydrofoils 

    Torre Rodríguez, Oscar de la (Universitat Politècnica de Catalunya, 2013-02-26)
    Tesis
    Acceso abierto
    The dynamic response of any structure submerged in water is significantly modified by the effect of added mass. The inertia of the fluid that the body must accelerate during its vibrational motion decreases its natural ...
  • Caracterització del flux a causa de la interacció rotor-estator en turbomàquines mitjançant CFD 

    Fontanals García, Alfred (Universitat Politècnica de Catalunya, 2013-02-15)
    Tesis
    Acceso abierto
    A les turbomàquines pot haver una forta interacció entre els àleps del rodet i les directrius del difusor que afecten la dinàmica del flux i el rendiment estructural de les màquines. Aquest fenomen s’anomena interacció ...

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