Enviaments recents

  • Experimental Investigation of the Cavitation Effects on the Heat Generation in a Closed Loop Pumping System 

    Bermejo Plana, David; Escaler Puigoriol, Francesc Xavier; Dular, Matevz; Ruiz Mansilla, Rafael (2018)
    Text en actes de congrés
    Accés obert
    A series of tests were carried out in the cavitation tunnel of the Laboratory for Water and Turbine Machines of the University of Ljubljana in order to investigate the effects of cavitation in the water heating process of ...
  • Numerical simulation of the micro-jet velocity and cavitation-erosion on an axisymmetric nozzle 

    Hidalgo, V.; Escaler Puigoriol, Francesc Xavier; Luo, Xianwu; Valencia, E. (2018)
    Text en actes de congrés
    Accés obert
    The present study deals with the numerical study of the micro-jet velocity and the cavitation - erosion on an axisymmetric nozzle, which presents high ow unsteadiness and aggressiveness. The proposed model is based on ...
  • Assessment of remote cavitation detection methods with flow visualization in a full scale francis turbine 

    Escaler Puigoriol, Francesc Xavier; Vilberg, Ingrid; Ekanger, Jarle; Francke, H; Kjeldsen, Morten (2018)
    Text en actes de congrés
    Accés obert
    This paper describes the experimental investigations carried out in the Francis turbine at Svorka power plant operated by Statkraft in Norway. The unit, with a head of 260 m, can deliver a maximum output load of 25 MW. The ...
  • Sensitivity analysis of zwart-gerber-belamri model parameters on the numerical simulation of francis runner cavitation 

    Escaler Puigoriol, Francesc Xavier; Roig Bauzà, Rafel; Hidalgo, Víctor (2018)
    Text en actes de congrés
    Accés obert
    A series of numerical simulations of the 3D cavitation development in the GAMM Francis turbine runner were carried out with the Zwart-Gerber -Belamri (ZGB) two-phase model available in ANSYS ¿ CFX v16.2. The aim of the ...
  • Experimental study of the dynamic response of partially filled pipes focused on natural frequencies and mode shapes 

    De La Torre, Oscar; Escaler Puigoriol, Francesc Xavier; Goggins, Jamie (American Society of Mechanical Engineers (ASME), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The presence of air in piping systems is a major concern in the industry. Problems like flow disruption, reduction of hydraulic machinery efficiencies or a significant drop in pipe capacity are many times related to this ...
  • Numerical modelling of the cooling system at alba synchrotron radiation facility to understand its performance 

    Escaler Puigoriol, Francesc Xavier; Prieto Moline, María Montserrat; Quispe Flores, Marcos; Kjeldsen, Morten; De La Torre, Oscar (American Society of Mechanical Engineers (ASME), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The ALBA Synchrotron Light Source in Barcelona (Spain) requires a reliable, stable and adequate cooling system for its optimal operation. The current design with four long and intricate consumption lines with a ring type ...
  • Thermo-fluid numerical simulation of the crotch absorbers’ cooling pinholes for alba storage ring 

    Escaler Puigoriol, Francesc Xavier; Arbó, Victor; Casas, Joan; Colldelram, Carles; Quispe, Marcos; Prieto Moline, María Montserrat (2016)
    Comunicació de congrés
    Accés obert
    The ALBA Synchrotron Light Facility crotch absorbers, that remove the unused storage ring radiation, incorporate an internal cooling system composed by a number of parallel pinholes and by the corresponding stainless steel ...
  • Numerical simulation of the alba synchrotron light source cooling system response to pump start-up and shut-down 

    Escaler Puigoriol, Francesc Xavier; Casas, Joan; Colldelram, Cales; Quispe, Marcos; Prieto Moline, María Montserrat (2016)
    Comunicació de congrés
    Accés obert
    The ALBA Synchrotron Light Source cooling system is submitted to regular pump start-ups and shut-downs. Moreover, pumps can trip due to motor power failures. As a result, the piping system can be subjected to surges and ...
  • Numerical simulation of the alba synchrotron light source cooling system response for failure prevention 

    Escaler Puigoriol, Francesc Xavier; Casas, Joan; Colldelram, Carles; Quispe, Marcos; Prieto Moline, María Montserrat (2016)
    Comunicació de congrés
    Accés obert
    The ALBA Synchrotron Light Source cooling system is designed with a common return pipe that interconnects the four consumption rings. Such configuration is believed to compromise its optimal operation. To understand its ...
  • Thermo-fluid study of the upc race-track microtron cooling system 

    Escaler Puigoriol, Francesc Xavier; Koubychine Merkulov, Youri Alexandrovich; Blasco Argente, Vicente Pablo; Romero Perea, Juan Antonio; Sánchez Díaz, Alexandre; Prieto, M.; Shvedunov, V.I. (2016)
    Comunicació de congrés
    Accés obert
    The cooling system of the race-track microtron (RTM), which is under construction at the Universitat Politècnica de Catalunya (UPC), has been simulated by means of a computational fluid dynamics (CFD) software. The hydraulic ...
  • Study of the cooling and vacuum systems of a miniature 12 MeV race-track microtron 

    Kubyshin, Yu A.; Escaler Puigoriol, Francesc Xavier; Shvedunov, Vasiliy (2017)
    Comunicació de congrés
    Accés obert
    With the aim of optimization, numerical simulations of the cooling and vacuum systems of a compact 12 MeV race-track microtron (RTM) which is under construction at the Technical University of Catalonia have been carried ...
  • Efectos de la obstrucción del flujo en una turbina 

    Fontanals García, Alfred; Pijoan Fusté, Roger; Guardo Zabaleta, Alfredo de Jesús; Coussirat Núñez, Miguel Gustavo (Asociación Argentina de Mecánica Computacional, 2016)
    Text en actes de congrés
    Accés obert
    El rendimiento de una turbina, está sujeto al comportamiento del flujo a través de las directrices del distribuidor y de los álabes del rodete. Para evitar que el flujo de agua procedente del embalse introduzca cuerpos ...

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