Exploració per autor "Torre Rodríguez, Óscar de la"

Ara es mostren els items 13-23 de 23

    • Modelling and adaptive parameter estimation for a piezoelectric cantilever beam 

      Wang, Bin; Costa Castelló, Ramon; Na, Jing; Torre Rodríguez, Óscar de la; Escaler Puigoriol, Francesc Xavier (2022)
      Article
      Accés obert
      This paper proposes a new adaptive estimation approach to online estimate the model parameters of a piezoelectric cantilever beam. The beam behavior is firstly modeled using partial differential equations (PDE) considering ...

    • Numerical assessment of parameters influencing the modal response of a Kaplan turbine model 

      Roig Bauzà, Rafel; Torre Rodríguez, Óscar de la; Jou Santacreu, Esteban; Escaler Puigoriol, Francesc Xavier (Institute of Physics (IOP), 2021)
      Text en actes de congrés
      Accés obert
      The present study intends to investigate numerically the impact of: i) the fluid added mass, ii) the turbine rotational speed and iii) the variation of the runner blade bearing stiffness due to the turbine water head on ...

    • Numerical investigation of the effects of hydrofoil vibrations on the unsteady behavior of cavitation 

      Geng, Linlin; Chen, Jian; Torre Rodríguez, Óscar de la; Escaler Puigoriol, Francesc Xavier (Institute of Physics (IOP), 2021)
      Text en actes de congrés
      Accés obert
      In order to better understand the fluid-structure interaction (FSI) in hydraulic machines, this study aims to numerically investigate the flow around an oscillating hydrofoil with special attention on the effect of ...

    • Numerical modal analysis of a Kaplan turbine runner 

      Roig Bauzà, Rafel; Torre Rodríguez, Óscar de la; Jou Santacreu, Esteban; Escaler Puigoriol, Francesc Xavier (2020)
      Comunicació de congrés
      Accés obert
      The aim of the research has been to investigate the change of dynamic behavior of a Kaplan turbine runner when submerged in still water. More specifically, the effects of the added mass on the modes of vibration have been ...

    • Numerical simulation of cavitation erosion aggressiveness induced by unsteady cloud cavitation 

      Geng, Linlin; Chen, Jian; Torre Rodríguez, Óscar de la; Escaler Puigoriol, Francesc Xavier (Multidisciplinary Digital Publishing Institute, 2020-08-01)
      Article
      Accés obert
      A numerical investigation of the erosion aggressiveness of leading edge unsteady cloud cavitation based on the energy balance approach has been carried out to ascertain the main damaging mechanisms and the influence of the ...

    • 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
      Accés obert
      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 ...

    • PZT actuators as on-board instruments to reduce vibrations and strains in submerged structures 

      Sánchez Botello, Xavier; Torre Rodríguez, Óscar de la; Roig Bauzà, Rafel; Costa Castelló, Ramon; Escaler Puigoriol, Francesc Xavier (IOP Publishing, 2022)
      Text en actes de congrés
      Accés obert
      This paper presents the design and evaluation of an active control system to reduce vibrations and strains of submerged structures. For that, a metallic disk mounted in a test rig has been equipped with on-board waterproof ...

    • The effect of cavitation on the natural frequencies of a hydrofoil 

      Torre Rodríguez, Óscar de la; Escaler Puigoriol, Francesc Xavier; Egusquiza Estévez, Eduard; Dreyer, Matthieu; Farhat, Mohamed (2012)
      Comunicació de congrés
      Accés obert

    • 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
      Accés obert
      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 ...

    • Validation of the multi-objective structural optimisation of a composite turbine blade 

      Fagan, Edward M.; Torre Rodríguez, Óscar de la; Leen, Sean B.; Goggins, Jamie (2018-11-15)
      Article
      Accés obert
      Structural optimisation of a wind turbine blade is presented in this work. The optimisation was performed using a multi-objective genetic algorithm and finite element modelling to determine the optimal structural design ...

    • Wind tunnel testing of a high aspect ratio wing model 

      Cooper, Jonathan E.; Cook, Robbie G; Francois, G.; Torre Rodríguez, Óscar de la; Neild, Simon A.; Lowenberg, Mark H.; Alexander, S. S.; Coetzee, E. B.; Evans, M. (Curran, 2019)
      Text en actes de congrés
      Accés obert
      There is much current interest in the development of High Aspect Ratio Wing (HARW) designs for improved aircraft performance. However, there are a lack of relevant data sets available to validate aeroelastic modelling ...