CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica

 

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

  • Visualization research of energy dissipation in a pump turbine unit during turbine mode's starting up 

    Jin, Faye; Wang, Huanmao; Luo, Yongyao; Presas Batlló, Alexandre; Bi, Huili; Wang, Zhengwei; Lin, Kai; Lei, Xingchun; Yang, Xiaolong (Elsevier, 2023-11-01)
    Article
    Restricted access - confidentiality agreement
    Identifying the precise location of flow energy dissipation (FED) in pump turbines is crucial for enhancing the stability of pumped storage power stations. In this study, the transient process of the turbine mode's starting ...

  • Water saving options in hydropower by means of variable speed operation: a prototype study in a mid-head Francis turbine 

    Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen; Valentín Ruiz, David; Egusquiza Montagut, Mònica; Pinto, Pedro Diogo; Gonçalves de Carvalho, Ana; Coronati, Alex; Egusquiza Estévez, Eduard (Elsevier, 2023-06-22)
    Article
    Open Access
    Nowadays, in order to mitigate the global warming effects, there is a need of renewable energy generation for the objective of carbon neutrality. In this context, hydropower plays a key role not only because the amount of ...

  • On the added modal coefficients of a rotating submerged cylinder induced by a whirling motion. Part 1: Experimental investigation 

    Roig Bauzà, Rafel; Sánchez Botello, Xavier; Jou Santacreu, Esteban; Escaler Puigoriol, Francesc Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2023-09-08)
    Article
    Open Access
    The operation of submerged rotating machines, such as marine current or tidal turbines, can present deleterious fluid phenomena that may provoke extreme structural vibrations. To predict their dynamic responses, it is ...

  • Thermal, acoustic, and fire performance characterization of textile face mask waste for use as low-cost building insulation material 

    Neri, Manuela; Cuerva Contreras, Eva; Levi, Elisa; Pujadas Álvarez, Pablo; Müller, Edgardo; Guardo Zabaleta, Alfredo de Jesús (Elsevier, 2023-04)
    Article
    Open Access
    Environmental issues are becoming increasingly important, and researchers are developing new technologies and models to reduce environmental impact. The circular economy is a production and consumption model that involves ...

  • Diagnostics of a hydraulic turbine failure 

    Egusquiza Montagut, Mònica; Presas Batlló, Alexandre; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Xu, Beibei; Chen, Diyi; Egusquiza Estévez, Eduard (2022)
    Conference report
    Open Access
    This paper presents the failure analysis and diagnostic of a hydraulic turbine. Shortly after a maintenance revision the thrust bearing of the turbine was destroyed when the turbine was put into operation. The damaged ...

  • Characterization of the fluid damping in simplified models of pump-turbines and high head Francis runners 

    Moraga González, Greco Alonso; Valentín Ruiz, David; Egusquiza Montagut, Mònica; Zhou, Lingjiu; Presas Renom, Andreu (IOP Publishing, 2022)
    Conference report
    Open Access
    In order to satisfy the power demand in the electrical grid, hydraulic turbine units frequently work under off-design operation conditions and pass through transient events. These operation conditions can lead to high ...

  • Resonance vibration interventions in the femur: Experimental-numerical modelling approaches 

    Presas Batlló, Alexandre; Valentín Ruiz, David; Deering, Joseph; Grandfield, Kathryn; Mele, Elisa; Heiss, Christian; Bosbach, Wolfram A.; Kampschulte, Marian; Yu, Bosco; Biehl, Christoph; Krombach, Gabriele A. (Elsevier, 2021-12)
    Article
    Restricted access - publisher's policy
    Motive: External vibration excitation might be key to many novel non-surgical interventions for pathologies in the musculoskeletal system and in other parts of the human organism. Lack of understanding about vibration ...

  • Thermal assessment of a ventilated double skin façade component with a set of air filtering photocatalytic slats in the cavity 

    Roig Mayoral, Oriol; Cuerva Contreras, Eva; Pardal March, Cristina; Guardo Zabaleta, Alfredo de Jesús; Isalgué Buxeda, Antonio; López Besora, Judit (2023-01-17)
    Article
    Open Access
    Indoor air quality is a crucial factor when evaluating habitability, especially in developed countries, where people spend most of their time indoors. This paper presents a novel double skin façade (DSF) system that combines ...

  • Time-frequency domain characteristics analysis of a hydro-turbine governor system considering vortex rope excitation 

    Lei, Liuwei; Li, Feng; Xu, Beibei; Egusquiza Montagut, Mònica; Luo, Xingqi; Zhang, Junzhi; Egusquiza Estévez, Eduard; Chen, Diyi; Jiang, Wei; Patelli, Edoardo (2022-01)
    Article
    Open Access
    Understanding and simulating the dynamic characteristics of the hydro-turbine governor system is essential to guarantee the safety of the hydro-power systems. This study proposes a modification method of the water head at ...

  • Hybridization in Kaplan turbines. Wear and tear assessment 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Egusquiza Montagut, Mònica; Valero Ferrando, Ma. del Carmen (IOP Publishing, 2022)
    Conference report
    Open Access
    In the current energy market, hydraulic turbines are increasingly demanded to work in Frequency containment reserve (FCR) mode to compensate the constant frequency fluctuations in the electrical grid. To do so, hydraulic ...

  • Numerical analysis on the modal characteristics of a pumped storage unit runner in cavitating flow 

    Cao, Jingwei; Luo, Yongyao; Presas Batlló, Alexandre; Mao, Zhongyu; Wang, Zhengwei (Elsevier, 2022-12-01)
    Article
    Restricted access - publisher's policy
    Cavitation is an important issue in pumped storage unit as it can compromise the safe and stable operation of the unit. The present work aims revealing the dynamic behavior of a pump-turbine runner in cavitating flow from ...

  • Estudi fluidodinàmic/tèrmic de la coberta de la central Tànger. Informe #2 

    Guardo Zabaleta, Alfredo de Jesús (2022-06-21)
    Research report
    Restricted access - confidentiality agreement

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