Ponències/Comunicacions de congressos
Recent Submissions
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Numerical investigation of the effects of hydrofoil vibrations on the unsteady behavior of cavitation
(Institute of Physics (IOP), 2021)
Conference report
Open AccessIn 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 assessment of parameters influencing the modal response of a Kaplan turbine model
(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 ... -
CFD study of the effects of ingested bodies on the RSI of hydraulic turbines
(2018)
Conference report
Open AccessThe 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 ... -
Detection and analysis of part load and full load instabilities in a real Francis turbine prototype
(Institute of Physics (IOP), 2017)
Conference report
Open AccessFrancis turbines operate in many cases out of its best effici ency point, in order to regulate their output power according to the instantaneous ener gy demand of the grid. Therefore, it is of paramount importance to analyse ... -
Overview of the experimental tests in prototype
(Institute of Physics (IOP), 2017)
Conference report
Open AccessExperimental tests in prototype are necessary to understand the dynamic behaviour of the machine during different operating points. Hydraulic phenomena as well as its effect on the structure need to be studied in o rder ... -
Dynamic response of the MICA runner. Experiment and simulation
(Institute of Physics (IOP), 2017)
Conference report
Open AccessStudying the dynamic response of Francis turbine runners is of paramount importance in order to avoid resonance problems during operating conditions. For this purpose, the natural frequencies as well as their associated ... -
Condition monitoring of a prototype turbine. Description of the system and main results
(Institute of Physics (IOP), 2017)
Conference report
Open AccessThe fast change in new renewable energy is affecting directly the required operating range of hydropower plants. According to the present demand of electricity, it is necessary to generate different levels of power. Because ... -
Advanced condition monitoring of Pelton turbines
(2017)
Conference report
Restricted access - publisher's policyThe ability of hydropower to adapt the electricity generation to the demand is necessary to integrate wind and solar energy to the grid. Nowadays hydropower turbines are required to work under harsher operating conditions ... -
On the use of PZT-Patches as exciters in modal analysis: application to submerged structures
(Multidisciplinary Digital Publishing Institute (MDPI), 2016)
Conference report
Open AccessModal Analysis is an experimental technique widely used to determine the dynamic response of structures. One of the most critical part is the selection of the actuator that will excite the tested structure. In many cases, ... -
Influence of the boundary conditions on the natural frequencies of a Francis turbine
(Institute of Physics (IOP), 2016)
Conference report
Open AccessNatural frequencies estimation of Francis turbines is of paramount importance in the stage of design in order to avoid vibration and resonance problems especially during transient events. Francis turbine runners are submerged ... -
Influence of non-rigid surfaces on the dynamic response of a submerged and confined disk
(2015)
Conference report
Open AccessDetermining the dynamic response of submerged and confined disk-like structures is of interest in the hydraulic turbines field. Disks present similar dynamic characteristics than hydraulic turbine runners, especially in ... -
Preliminary results on the assessment of using Venetian blinds as a solar thermal collector in double skin facades in Mediterranean climates
(2015)
Conference report
Open AccessThe global trend on energy integration and building efficiency is making both researchers and developers look for technical solutions to use façade surfaces for electricity and/or domestic hot water production. These ...
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