Publication
Application of particle-based numerical analysis to the practical design of Pelton turbine
Publications associées (46)
On the sloshing free surface in the draft tube cone of a Francis turbine operating in synchronous condenser mode
François Avellan, Elena Vagnoni, Loïc Andolfatto
Hydropower plants may be required to operate in synchronous condenser mode in order to supply reactive power to the grid for compensating the fluctuations introduced by the intermittent renewable energies such wind and solar. When operating in this mode, t ...
2017A New Miniature Wind Turbine for Wind Tunnel Experiments. Part II: Wake Structure and Flow Dynamics
Fernando Porté Agel, Majid Bastankhah
An optimized three-bladed horizontal-axis miniature wind turbine, called WiRE-01, with the rotor diameter of 15 cm is designed and fully characterized in Part I of this study. In the current part of the study, we investigate the interaction of the turbine ...
2017Energy production with a tubular propeller turbine
Anton Schleiss, Cécile Münch-Alligné, Mário Jorge Rodrigues Pereira Da Franca, Vlad Hasmatuchi, Irene Almeida Samora
Micro-hydropower is a way of improving the energetic efficiency of existent water systems. In the particular case of drinking water systems, several studies have showed that pressure reducing valves can be by-passed with turbines in order to recover the di ...
2016Simulated Annealing in Optimization of Energy Production in a Water Supply Network
Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Irene Almeida Samora
In water supply systems, the potential exists for micro-hydropower that uses the pressure excess in the networks to produce electricity. However, because urban drinking water networks are complex systems in which flows and pressure vary constantly, identif ...
Springer Verlag2016Opportunity and Economic Feasibility of Inline Microhydropower Units in Water Supply Networks
Anton Schleiss, Pedro Filipe De Almeida Manso, Mário Jorge Rodrigues Pereira Da Franca, Irene Almeida Samora
Small-scale hydropower is emerging as a decentralized source to satisfy local demand for electricity. In water supply systems, microhydropower can be used for energy recovery associated with excessive pressure control. However, there is a lack of specific ...
American Society of Civil Engineers2016Optimization of a Shared Tailrace Channel of Two Pumped-Storage Plants by Physical and Numerical Modeling
Giovanni De Cesare, Martin Peter Bieri, Stéphane Christian Olivier Terrier, Sylvain Candolfi
Pump and turbine operations lead to head losses in the tailrace channel. Pumping discharge may be limited due to potential air entrainment into the pump shaft when the downstream reservoir is at its lowest level and the head losses are too high. Regarding ...
2014Physical Mechanisms governing Self-Excited Pressure Oscillations in Francis Turbines
The importance of renewable energy sources for the electrical power supply has grown rapidly in the past decades. Their often unpredictable nature however poses a threat to the stability of the existing electric grid. Hydroelectric powerplants play an impo ...
EPFL2014Efficient runner safety assessment during early design phase and root cause analysis
Fatigue related problems in Francis turbines, especially high head Francis turbines, have been published several times in the last years. During operation the runner is exposed to various steady and unsteady hydraulic loads. Therefore the analysis of force ...
International Association For Hydraulic Research2012Flow and waves in a common tailrace channel of two pump-storage plants - physical and numerical simulation
Giovanni De Cesare, Martin Peter Bieri, Stéphane Christian Olivier Terrier, Sylvain Candolfi
Pump and turbine operations lead to head losses in the tailrace channel. Pumping discharge may be limited due to potential air entrainment into the pump shaft when the downstream reservoir is at its lowest level and the head losses are high. Regarding turb ...
2012Analysis of the dynamic response of pump-turbine runners- Part I: Experiment
François Avellan, Mohamed Farhat, Xiaopeng Huang, Eduard Egusquiza
When in operation, pump-turbine runners have to withstand large pressure pulsations generated by the rotor-stator interaction. The analysis of the dynamic behavior of these structures is necessary to avoid damage. For this analysis a realistic model of the ...
International Association For Hydraulic Research2012