Recent Submissions

  • 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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • On the use of PZT-Patches as exciters in modal analysis: application to submerged structures 

    Presas Batlló, Alexandre; Valentín Ruiz, David; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Bossio, Matias (Multidisciplinary Digital Publishing Institute (MDPI), 2016)
    Conference report
    Open Access
    Modal Analysis is an experimental technique widely used to determine the dynamic response of structures. One of the most critical part is the selection of the actuator that will excite the tested structure. In many cases, ...
  • Feasibility of detecting natural frequencies of hydraulic turbines while in operation, using strain gauges 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Bossio, Matias; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen (Multidisciplinary Digital Publishing Institute (MDPI), 2018-01-10)
    Article
    Open Access
    Nowadays, hydropower plays an essential role in the energy market. Due to their fast response and regulation capacity, hydraulic turbines operate at off-design conditions with a high number of starts and stops. In this ...
  • Power swing generated in Francis turbines by part load and overload instabilities 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Bossio, Matias (2017-12-13)
    Article
    Open Access
    Hydropower plays a key role in the actual energy market due to its fast response and regulation capacity. In that way, hydraulic turbines are increasingly demanded to work at off-design conditions, where complex flow ...
  • Marangoni stress induced by free-surface for pressure reduction in reverse osmosis 

    Arias Montenegro, Francisco Javier (2018-02-03)
    Article
    Restricted access - publisher's policy
    Marangoni hydrodynamic motion and its potential technological application in reverse osmosis (RO) process for seawater desalination is discussed. The fundamental core idea in this note is the possibility to take advantage ...
  • Simulations and design of a sea moored buoy with a real time data undersea seismometer 

    Carbonell Ventura, Montserrat; Massana Hugas, Immaculada; Prat Farran, Joana d'Arc; Trullols Farreny, Enric; Río Fernandez, Joaquín del (2017)
    Conference report
    Restricted access - publisher's policy
    In this paper we present numerical simulations performed prior to the deployment of a real-time seismic buoy in the Alboran Sea (Western Mediterranean), in an active seismic area at 250-300m depth. Due to the inherent ...
  • FEMPAR: Scaling Multi-Level Domain Decomposition up to the full JUQUEEN supercomputer 

    Martín Huertas, Alberto Francisco; Badia, Santiago; Principe, Ricardo Javier (2015)
    External research report
    Open Access
    In conjunction with this year's JUQUEEN Porting and Tuning Workshop, which is part of the PRACE Advanced Training Centres curriculum, JSC continued its series of BlueGene Extreme Scaling Workshops. Seven application teams ...
  • Assessment of the use of Venetian blinds as solar thermal collectors in double skin facades in Mediterranean climates 

    Velasco Vilanova, Abel; Jiménez García, Sergi; Guardo Zabaleta, Alfredo de Jesús; Fontanals García, Alfred; Egusquiza Montagut, Mònica (2017-11-10)
    Article
    Open Access
    The global trend on energy integration and building efficiency is making both researchers and building developers look for technical solutions to use facade surfaces for energy harvesting. In this work, the assessment ...
  • A tentative mechanism for dust vertical transport at extreme altitudes from the collapse of supersaturated tropospheric cavities on Mars with particular reference to march 2012 event 

    Arias Montenegro, Francisco Javier (2017)
    Conference report
    Open Access
    Consideration is given to the formation and collapse of supersaturated tropospheric cavities on Mars for dust vertical transport at extreme altitudes as a tentative mechanism explaining the martian march-2012 plume. It ...
  • A first estimate for a pressure-retarded osmosis-driven thermosyphon 

    Arias Montenegro, Francisco Javier (2017-12-01)
    Article
    Restricted access - publisher's policy
    Pressure retarded osmosis (PRO) process and its significance for thermosyphon technology is discussed. In previous work the possibility to drive a thermosyphon by difference of densities from induced salinity gradients ...
  • Gravitomagnetic separation of bipolar charged martian dust 

    Arias Montenegro, Francisco Javier (2017)
    Conference lecture
    Open Access
    The possible role of magnetic anomalies on Mars in gravitational enhancement of separation of charged dust is considered. It is known that charges become spatially separated by differential transport and gravitational ...
  • Failure investigation of a Pelton turbine runner 

    Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Presas Batlló, Alexandre (Elsevier, 2017-11)
    Article
    Restricted access - publisher's policy
    In this paper, an uncommon failure of a Pelton turbine has been analyzed. After the monitoring system detected a sudden increase in the vibration levels, the turbine was inspected. The inspection showed that a fragment of ...

View more