Articles de revista

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  • On the rotating vortex rope and its induced structural response in a Kaplan turbine model 

    Roig Bauzà, Rafel; Sánchez Botello, Xavier; Escaler Puigoriol, Francesc Xavier; Mulu, Berhanu; Högström, Carl-Maikel (2022-08-29)
    Article
    Open Access
    The rotating vortex rope, which can be decomposed in the rotating and the plunging modes, is the origin of pressure fluctuations in the draft tube cone when hydraulic turbines operate at part load, compromising the structural ...

  • Prediction of cavitation erosion with different erosion risk indicators 

    Geng, Linlin; Zhang, Dingli; Chen, Jian; Torre Rodríguez, Óscar de la; Escaler Puigoriol, Francesc Xavier (2022-02)
    Article
    Restricted access - publisher's policy
    This present work devoted to simulate the unsteady cavitating flow around a hydrofoil and assess its erosion power predicted by different erosion risk indicators. For that, the behavior of unsteady cloud cavity is numerically ...

  • Rotatory 3D structured mesh study using openFOAM to simulate the flow in francis turbine 

    Hidalgo Díaz, Víctor Hugo; Cando, E.; Mora, Carlos; Escaler Puigoriol, Francesc Xavier; Velasco, M.; Simbaña, Stalyn Fabian; Puga, Diana; Valencia, E. (Elsevier, 2021)
    Article
    Restricted access - publisher's policy
    The development of a methodology to simulate numerically the steady state flow field in Francis turbines was carried out using the open source CFD software OpenFOAM along with a MRF and AMI approach. A structured mesh ...

  • Large-eddy simulation of cavitating tip leakage vortex structures and dynamics around a NACA0009 hydrofoil 

    Geng, Linlin; Zhang, Desheng; Chen, Jian; Escaler Puigoriol, Francesc Xavier (MDPI, 2021-11-01)
    Article
    Open Access
    The tip leakage vortex (TLV) has aroused great concern for turbomachine performance, stability and noise generation as well as cavitation erosion. To better understand structures and dynamics of the TLV, large-eddy simulation ...

  • Understanding the influence of wake cavitation on the dynamic response of hydraulic profiles under lock-in conditions 

    Roig Bauzà, Rafel; Chen, Jian; Torre Rodríguez, Óscar de la; Escaler Puigoriol, Francesc Xavier (2021-09-22)
    Article
    Open Access
    To accelerate the integration of fluctuating renewable energy technologies in the power systems, it is necessary to increase the flexibility of hydropower by operating turbines at off-design conditions. Unfortunately, this ...

  • Fiber bragg grating sensors for underwater vibration measurement: potential hydropower applications 

    Torre Rodríguez, Óscar de la; Floris, Ingazio; Sales, Salvador; Escaler Puigoriol, Francesc Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2021-06-22)
    Article
    Open Access
    The present paper assesses the performance and characteristics of fiber Bragg grating sensors, with a special interest in their applications in hydraulic machinery and systems. The hydropower industry is turning to this ...