Enviaments recents

  • Influence of draft tube water injection system on cavitation behaviour in a full-scale Francis turbine with visual access 

    Vilberg, Ingrid; Kjeldsen, Morten; Escaler Puigoriol, Francesc Xavier; Ekanger, Jarle; Nielsen, TK (2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper describes the results of a comprehe nsive and ongoing project to control unsteady fluid - dynamic behaviour and associated effects at Svorka hydro power plant (25 MW, 260 m, 600 rpm), operated by Statkraft in ...
  • Numerical simulation of the cavitation micro-jet velocity and erosion on a plane-convex hydrofoil with semicylindrical obstacle 

    Hidalgo, V; Luo, X; Escaler Puigoriol, Francesc Xavier; Valencia, E.; Cruz, P (2018)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The present study deals with the numerical study of the cavitation micro–jet velocity and erosion on a plane–convex hydrofoil with semicylindrical obstacle, which induces a big cluster of cavities with a strong erosive ...
  • Dynamic response of a NACA0009 hydrofoil under cavitation conditions 

    Escaler Puigoriol, Francesc Xavier; De La Torre, Oscar (2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The dynamic response of an hydraulic machine is greatly affected by the water due to the added mass effect . However, the presence of cavitation can change the modal response of the coupled fluid - structure system because ...
  • Analysis and calibration of Ground Penetrating Radar shielded antennas 

    Rasol, M.; Pérez Gracia, María de la Vega; Santos Assunçao, Sonia (2018)
    Text en actes de congrés
    Accés obert
    Ground-Penetrating Radar (GPR) is a non-destructive geophysical method applied in many civil engineering applications. The knowledge of the GPR antennas behavior is crucial to obtain accurate results and comprehensive data ...
  • Medidas sísmicas instantaneas del fondo marino 

    Roset Juan, Francesc Xavier; Trullols Farreny, Enric; Prat Farran, Joana d'Arc; Río Fernandez, Joaquín del; Massana Hugas, Immaculada; Carbonell Ventura, Montserrat; Toma, Daniel (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    El proyecto INMARSIS ha desarrollado y desplegado un equipo marino anclado que suministra datos sísmicos en tiempo real. El sistema se basa en un sismómetro submarino, una boya de superficie y un cable de amarre que ...
  • Three dimensional simulation of gerotor with deforming mesh by using OpenFOAM 

    Castilla López, Roberto; Gámez Montero, Pedro Javier; Raush Alviach, Gustavo Adolfo; Codina Macià, Esteban (2018)
    Text en actes de congrés
    Accés obert
    A new-born design and construction of a mini gerotor metering pump with trochoidal-teeth is presented. The technical innovation in this new-born design is to study the fluid dynamic effects of interteeth and lateral ...
  • On the thermal cyclic precipitation of aqueous solutions for heat powered cycles in space 

    Arias Montenegro, Francisco Javier (American Institute of Aeronautics and Astronautics (AIAA), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Consideration is given to a novel process for heat transport, mass transport, thermal storage and mechanical transformation of heat based in the cyclic precipitation of aqueous solutions when an input of heat is applied ...
  • CO2-cushion vehicle for Mars. An alternative locomotion for exploration rovers 

    Arias Montenegro, Francisco Javier (American Institute of Aeronautics and Astronautics (AIAA), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this work, consideration is given to ad hoc cushion vehicles for Mars. On Earth, air cushion vehicles use pressurized atmospheric air by means of powerful blowers that pump the air into a chamber, however, for Mars -at ...
  • Magnetic traveling waves induced by mini-coils for sweeping dust of Mars solar arrays 

    Arias Montenegro, Francisco Javier (American Institute of Aeronautics and Astronautics (AIAA), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this work consideration is given to dust removal from surface of Mars solar arrays by harnessing the magnetic properties of the dust. Here, it is speculated a possible technique by which localized and properly spaced ...
  • A method of attaining high pressurized vessels in space, the Moon and with particular reference to Mars 

    Arias Montenegro, Francisco Javier (2018)
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    Accés restringit per política de l'editorial
    In this work consideration is given for a technological method of attaining high pressurized vessels by a solidification-sublimation thermal cycle of CO2 without the need of compressors or mechanical devices prone to ...
  • Slingshot effect for ocean wave energy conversion 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (ICOE (International Conference on Ocean Energy), 2018)
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    Accés restringit per política de l'editorial
    Slingshot effect (SE) and its significance with regard to ocean wave energy conversion is discussed. It is shown that owing to the huge inertia which can be transported by the ocean wave plus its periodicity, then a movable ...
  • Resuspension and control of reservoir sediments by surface waves and point absorbers 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (International Association for Hydro-Environment Engineering and Research (IAHR), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This work is intended to investigate the deliberate generation of mild waves on the surface of reservoirs and the use of a farm of point absorbers, floating buoys or akin technology, to convert the energy transported by ...

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