La recerca del CDIF està relacionada amb el comportament dinàmic d'estructures confinades excitades per fluids. La recerca del comportament dinàmic requereix del estudi de les excitacions generades per un fluid i la resposta estructural per determinar els comportaments vibratoris i les deformacions. L'aplicació principal està en les turbomàquines hidràuliques (sector energies renovables).

Recent Submissions

  • Transposition of the mechanical behavior from model to prototype of Francis turbines 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard; Gomes, João; Avellan, François (Elsevier, 2020-06-01)
    Article
    Restricted access - publisher's policy
    Hydropower is nowadays essential for balancing the electrical grid providing flexibility and fast response. The role of hydraulic turbines has changed from working at their Best Efficiency Point (BEP) to work in the whole ...
  • Presa de Caruachi. Estudio del comportmiento hidráulico de las compuertas de los conductos de desvío 

    Sánchez Juny, Martí; Niñerola Chifoni, Daniel; Pomares Abad, Juan; Egusquiza Estévez, Eduard; Dolz Ripollès, Josep; Abadía, Fernando; Quintero, Francisco (2002-07)
    Article
    Open Access
    Se presenta el estudio desarrollado en el Laboratorio de Modelos Reducidos del Dpto. de Ing. Hidráulica, Marítima y Ambiental de la UPC, para el análisis del comportamiento hidráulico de las compuertas a utilizar en la ...
  • Experimental investigation on synthesis, characterization, stability, thermo-physical properties and rheological behavior of MWCNTs-kapok seed oil based nanofluid 

    Hameed, Ayesha; Mukhtar, Ahmad; Shafiq, Umar; Qizilbash, Masooma; Guardo Zabaleta, Alfredo de Jesús (2019-03-01)
    Article
    Open Access
    Several researchers devoted their efforts for the thermal conductivity enhancement of Carbon Nanotubes (CNTs) based nanofluids as CNTs have excellent thermal properties. However, limited research is reported on the detailed ...
  • Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation 

    Geng, Linlin; Escaler Puigoriol, Francesc Xavier (Engineering Applications of Computational Fluid Mechanics, 2019-11-26)
    Article
    Open Access
    The numerical simulation of unsteady cavitation flows is sensitive to the selected models and associated parameters. Consequently, three Reynolds Average Navier-Stokes (RANS) turbulence models and the Zwart cavitation model ...
  • Synchronous condenser operation in Francis turbines: Effects in the runner stress and machine vibration 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard (Elsevier, 2020-02-01)
    Article
    Restricted access - publisher's policy
    Reactive power shortage is one of the current issues that endanger the stability of the power grid systems. Some massive blackouts have been experienced in the past years due to the unbalance of reactive power. One of the ...
  • Experimental measurements of the natural frequencies and mode shapes of rotating disk-blades-disk assemblies from the stationary frame 

    Presas Batlló, Alexandre; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard (Multidisciplinary Digital Publishing Institute, 2019-09-14)
    Article
    Open Access
    Determining the natural frequencies and mode shapes of rotating turbomachinery components from both rotating and stationary reference frames is of paramount importance to avoid resonance problems that could affect the ...
  • 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 ...
  • 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 ...
  • 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 ...
  • CFD study of the effects of ingested bodies on the RSI of hydraulic turbines 

    Guardo Zabaleta, Alfredo de Jesús; Fontanals García, Alfred; Valero Ferrando, Ma. del Carmen; Egusquiza Estévez, Eduard (2018)
    Conference report
    Open Access
    The ingestion of large bodies in hydraulic turbines can produce blockage in the runner and/or the distributor, modifying the amplitude and uniformity of pressure pulsations and generating large ...
  • 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 ...
  • Added mass effects on a Francis turbine runner with attached blade cavitation 

    Huang, Xingxing; Escaler Puigoriol, Francesc Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2019-06-11)
    Article
    Open Access
    To have a safe structural design, an analysis of the dynamic behavior of a Francis turbine runner with consideration of the added mass e ects of surrounding water is necessary during design phase. Both in design and at o ...

View more