Recent Submissions

  • Detection of hydraulic phenomena in francis turbines with different sensors 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard (Multidisciplinary Digital Publishing Institute (MDPI), 2019-09-19)
    Article
    Open Access
    Nowadays, hydropower is demanded to provide flexibility and fast response into the electrical grid in order to compensate the non-constant electricity generation of other renewable sources. Hydraulic turbines are therefore ...
  • Fatigue life estimation of Francis turbines based on experimental strain measurements: Review of the actual data and future trends 

    Presas Batlló, Alexandre; Luo, Yongyao; Guo, Bao; Wang, Zhengwei (2019-03)
    Article
    Restricted access - publisher's policy
    Due to the massive entrance of new renewable energies such as wind or solar, hydraulic turbines have to work far from its designed point and withstanding multiple transients, such as starts and stops, that shorten the ...
  • Influence of the hydrodynamic damping on the dynamic response of Francis turbine runners 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Jou Santacreu, Esteban; Egusquiza Estévez, Eduard (2019-10-01)
    Article
    Restricted access - publisher's policy
    The dynamic behavior of Francis runners is of interest in the hydraulic machinery field since it is one of the most used type of hydraulic turbines for electricity generation. To evaluate the dynamic behavior of Francis ...
  • Modelling of the ethanol steam reforming Pd/CeO2 catalytic wall reactor 

    Cifuentes López, Alejandro; Torres Cámara, Ricardo; Llorca Piqué, Jordi (2019-11-27)
    Article
    Open Access
    Existing literature data have been used to model the steam reforming of ethanol on catalytic honeycombs coated with Rh-Pd/CeO2, which have shown an excellent performance and robustness for the production of hydrogen under ...
  • Scale-adaptive simulation of unsteady cavitation around a naca66 hydrofoil 

    Hidalgo, Victor; Escaler Puigoriol, Francesc Xavier; Valencia Torres, Esteban Alejandro; Peng, Xiaoxing (Multidisciplinary Digital Publishing Institute, 2019-09-05)
    Article
    Open Access
    Distances between consecutive aftershocks are analysed by means of mono- and multifractal theory with the aim of quantifying the complexity of the physical mechanism governing them, as well as their predictability and ...
  • Analysis of the forces driving the oscillations in 3D fluidic oscillators 

    Baghaei, Masoud; Bergadà Granyó, Josep Maria (2019-12-11)
    Article
    Open Access
    One of the main advantages of fluidic oscillators is that they do not have moving parts, which brings high reliability whenever being used in real applications. To use these devices in real applications, it is necessary ...
  • Seismic damage scenarios in the municipalities of Elche and Alicante (Spain). A first step to the emergency planning 

    Molina Palacios, Sergio; Agea Medina, Noelia; Galiana Merino, Juan José; Benabdeloued, Boualem Youcef Nassim (2019-01-01)
    Article
    Open Access
    South and South-East of Spain are the regions with a higher seismic hazard in Spain. Therefore, a regional normative, focused on the importance of developing seismic emergency planning in many of the municipalities of the ...
  • Mean kinetic energy distribution in finite-size wind farms: A function of turbines arrangement 

    Cortina, Gerard; Sharma, V.; Torres Cámara, Ricardo; Calaf, Marc (2019-10-28)
    Article
    Open Access
    In this work the redistribution and recovery of mean kinetic energy in a realistic, finite size wind farm is studied for neutral atmospheric boundary layer conditions. Five different wind farm configurations, with different ...
  • Geophonino-W: a wireless multichannel seismic noise recorder system for array measurements 

    Soler Llorens, Juan Luis; Galiana Merino, Juan José; Giner Caturla, José Juan; Rosa Cintas, Sergio; Benabdeloued, Boualem Youcef Nassim (Multidisciplinary Digital Publishing Institute (MDPI), 2019-09-21)
    Article
    Open Access
    The characterization of soil is essential for the evaluation of seismic hazard, because soil properties strongly influence the damage caused by earthquakes. Methods based on seismic noise are the most commonly used in soil ...
  • Numerical investigation into the influence on hydrofoil vibrations of water tunnel test section acoustic modes 

    Wang, Wei; Zhou, Lingjiu; Wang, Zhengwei; Escaler Puigoriol, Francesc Xavier; De La Torre, Oscar (2019-06-17)
    Article
    Restricted access - publisher's policy
    High-speed water tunnels are typically used to investigate the single-phase and two-phase flows around hydrofoils for hydraulic machinery applications but their dynamic behavior is not usually evaluated. The modal analysis ...
  • Gas film heat transfer as enhancement strategy for phase change materials 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (Wiley (John Wiley & Sons), 2019-10-16)
    Article
    Restricted access - publisher's policy
    In this work, consideration is given to an alternative strategy for phase change materials (PCMs) heat transfer enhancement with particular reference to horizontal plates. In contrast with current approaches in which heat ...
  • On the feasibility of ocean brine pool power stations 

    Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (2019-10-22)
    Article
    Restricted access - publisher's policy
    The demonstrated existence of vast brine pools in a number of places in the ocean basin around the world offers an interesting opportunity to the production of power from ocean, which has not been yet considered. The ...

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