Browsing by Author "Jou Santacreu, Esteban"
Now showing items 1-14 of 14
-
Comparative performance assessment between incompressible and compressible solvers to simulate a cavitating wake
Chen, Jian; Geng, Linlin; Jou Santacreu, Esteban; Escaler Puigoriol, Francesc Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2024-09-18)
Article
Open AccessTo study the effects of fluid compressibility on the dynamics of a cavitating vortex street flow in a regime where the vortex shedding frequency increases as a result of the cavitation increase, the cavitating wake behind ... -
Diagnóstico vibratorio del grupo 2 de la central hidráulica de ip
Escaler Puigoriol, Francesc Xavier; Jou Santacreu, Esteban (2021-11-08)
Research report
Restricted access - confidentiality agreement -
El Diagnóstico de daños en grupos hidroeléctricos mediante el análisis de vibraciones
Egusquiza Estévez, Eduard; Nascimento, Luiz de Paula do; Valero Ferrando, Ma. del Carmen; Jou Santacreu, Esteban (1994)
Article
Open AccessEl análisis del comportamiento vibratorio de Grupos Hidroeléctricos se puede utilizar para el diagnóstico del estado de la máquina. Se pretende detectar daños incipientes y poder seguir la evolución del estado de la máquina ... -
Evaluación de mediciones vibratorias realizadas en la CH Carcavilla el 29 de Abril de 2021
Escaler Puigoriol, Francesc Xavier; Jou Santacreu, Esteban (2021-06-01)
Research report
Restricted access - confidentiality agreement -
Experimental and numerical modal analysis of a reduced scale Kaplan turbine model
Roig Bauzà, Rafel; Torre Rodríguez, Óscar de la; Jou Santacreu, Esteban; Mulu, Berhanu; Escaler Puigoriol, Francesc Xavier (2021)
Conference report
Open AccessThis paper presents an experimental modal test of a Kaplan turbine model and provides the corresponding analysis of the results. The modal test, which included both the runner and the shaft line, was performed using an ... -
Experimental and numerical study on the detection of fatigue failure in hydraulic turbines
Sánchez Botello, Xavier; de la Torre, Adolfo; Roig Bauzà, Rafel; Jou Santacreu, Esteban; Torre Rodríguez, Óscar de la; Ayneto Gubert, Javier; Escaler Puigoriol, Francesc Xavier (Springer, 2023-10-06)
Article
Open AccessDetecting fatigue cracks in hydraulic turbine runners is costly, as it requires to stop the unit, empty it of water and access the runner for inspection. Thus, an alternative way based on monitoring the changes of the ... -
Failure investigation of a large pump-turbine runner
Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Huang, Xingxing; Guardo Zabaleta, Alfredo de Jesús; Jou Santacreu, Esteban; Rodríguez, Cristian (Elsevier, 2012-02-02)
Article
Open Access -
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
Open AccessThe 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 ... -
Mediciones del comportamiento vibratorio del grupo 3 de la central hidráulica de Seira
Escaler Puigoriol, Francesc Xavier; Jou Santacreu, Esteban (2022-07-08)
Research report
Restricted access - confidentiality agreement -
Mediciones del comportamiento vibratorio del grupo 3 de la central hidráulica de Seira
Escaler Puigoriol, Francesc Xavier; Jou Santacreu, Esteban (2022-07-08)
Research report
Restricted access - confidentiality agreement -
Millora de l’aprenentatge dins de l’aula de Mecànica de Fluids mitjançant aplicacions web
Jou Santacreu, Esteban; Escaler Puigoriol, Francesc Xavier; Presas Batlló, Alexandre; Trillas i Gay, Enric; Torre Suárez, Adolfo de la (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2022-05)
Article
Open AccessA causa de la situació de pandèmia viscuda recentment, la digitalització, l'ús de les TIC i l'ús d'eines en línia ha crescut exponencialment per donar suport als alumnes que necessiten ser ensenyats i avaluats de diferents ... -
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)
Conference report
Open AccessThe 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 modal analysis of a Kaplan turbine runner
Roig Bauzà, Rafel; Torre Rodríguez, Óscar de la; Jou Santacreu, Esteban; Escaler Puigoriol, Francesc Xavier (2020)
Conference lecture
Open AccessThe 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 ... -
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 AccessThe 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 ...