Publications related to Hydraulic motor

Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope

François Avellan, Arthur Tristan Favrel, Christian Landry, Andres Müller, Sébastien Alligné, Keita Yamamoto

At off-design operating operations, cavitating flow is often observed in hydraulic machines. The presence of a cavitation vortex rope may induce draft tube surge and electrical power swings at part load and full load operations. The stability analysis of t ...

2017

Dynamics of the precessing vortex rope and its interaction with the system at Francis turbines part load operating conditions

François Avellan, Arthur Tristan Favrel, Christian Landry, Andres Müller, Keita Yamamoto, Joao Gomes Pereira Junior

At part load conditions, Francis turbines experience the formation of a cavitation vortex rope at the runner outlet whose precession acts as a pressure excitation source for the hydraulic circuit. This can lead to hydro-acoustic resonances characterized by ...

2017

Experimental Hydro-Mechanical Characterization of Full Load Pressure Surge in Francis Turbines

François Avellan, Arthur Tristan Favrel, Christian Landry, Andres Müller, Keita Yamamoto

Full load pressure surge limits the operating range of hydro-electric generating units by causing significant power output swings and by compromising the safety of the plant. It appears during the off-design operation of hydraulic machines, which is increa ...

2017

Transposition of Francis turbine cavitation compliance at partial load to different operating conditions

François Avellan, Arthur Tristan Favrel, Christian Landry, Joao Gomes Pereira Junior

Francis turbines operating in part load conditions experience a swirling flow at the runner outlet leading to the development of a precessing cavitation vortex rope in the draft tube. This cavitation vortex rope changes drastically the velocity of pressure ...

2017

Characterization of hydraulic behavior of orifices in conduits

Nicolas Jean François Pascal Ghislain Adam

Surge tanks in high-head power plants ensure safe and flexible transient operation of the hydraulic machinery. Orifices or throttles in surge tanks are often critical structural elements in view of the good performance of surge tanks and the stability of t ...

EPFL-LCH2017

Analysis of mechanical-hydraulic bedload deposition control measures

Anton Schleiss, Giovanni De Cesare, Mário Jorge Rodrigues Pereira Da Franca, Sebastian Schwindt

During floods, the bedload transport of steep headwaters can exceed the hydraulic transport capacity of milder downstream reaches where settlements are often situated. Therefore, sediment retention barriers are typically installed upstream of such sensible ...

Elsevier2017

Experimental evidence of inter-blade cavitation vortex development in Francis turbines at deep part load condition

François Avellan, Arthur Tristan Favrel, Keita Yamamoto

Francis turbines are subject to various types of cavitation flow depending on the operating condition. To enable a smooth integration of the renewable energy sources, hydraulic machines are now increasingly required to extend their operating range, especia ...

Springer Verlag2017

Prediction of Francis Turbine Prototype Part Load Pressure and Output Power Fluctuations with Hydroelectric Model

François Avellan, Christophe Nicolet, Christian Landry, Sébastien Alligné, Joao Gomes Pereira Junior, Antoine Béguin

The prediction of pressure and output power fluctuations amplitudes on Francis turbine prototype is a challenge for hydro-equipment industry since it is subjected to guarantees to ensure smooth and reliable operation of the hydro units. The European FP7 re ...

2017

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Hydraulic motor

Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope

Dynamics of the precessing vortex rope and its interaction with the system at Francis turbines part load operating conditions

Experimental Hydro-Mechanical Characterization of Full Load Pressure Surge in Francis Turbines

Transposition of Francis turbine cavitation compliance at partial load to different operating conditions

Characterization of hydraulic behavior of orifices in conduits

Collapse phenomena of deformed cavitation bubbles

Analysis of mechanical-hydraulic bedload deposition control measures

Experimental evidence of inter-blade cavitation vortex development in Francis turbines at deep part load condition

Hydro-morphological processes through permeable sediment traps at mountain rivers

Prediction of Francis Turbine Prototype Part Load Pressure and Output Power Fluctuations with Hydroelectric Model

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Chat with Graph Search

Collapse phenomena of deformed cavitation bubbles

Dynamics of the precessing vortex rope and its interaction with the system at Francis turbines part load operating conditions

Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope

Transposition of Francis turbine cavitation compliance at partial load to different operating conditions

Experimental Hydro-Mechanical Characterization of Full Load Pressure Surge in Francis Turbines

Analysis of mechanical-hydraulic bedload deposition control measures

Characterization of hydraulic behavior of orifices in conduits

Experimental evidence of inter-blade cavitation vortex development in Francis turbines at deep part load condition

Hydro-morphological processes through permeable sediment traps at mountain rivers

Prediction of Francis Turbine Prototype Part Load Pressure and Output Power Fluctuations with Hydroelectric Model