Publications associées à Turbine Francis

Effects of Positive versus Negative Yaw Angles on Wind-Turbine Performance: An Application of BEM Theory

Wind-turbine wakes have negative effects on wind-farm performance. They are associated with: (a) the velocity deficit, which reduces the generated power of downwind turbines; and (b) the turbulence level, which increases the fatigue loads on downwind turbi ...

2014

Design and Optimization of an Innovative Solid Oxide Fuel Cell-Gas Turbine Hybrid Cycle for Small Scale Distributed Generation

François Maréchal, Daniel Favrat, Emanuele Facchinetti

Distributed power generation and cogeneration is an attractive way toward a more rational conversion of fuel and biofuel. The fuel cell-gas turbine hybrid cycles are emerging as the most promising candidates to achieve distributed generation with comparabl ...

Wiley-Blackwell2014

Flow field UVP measurements of a Y-shape outlet structure

Giovanni De Cesare, Alexandre Jean Pachoud

Y-shape outlet structures are used to release the turbine water into a reservoir. Classical design oftenuses a Y-shape over a certain length and with a specific opening angle. Depending on the geometry,especially in turbine mode, significant undesired flow ...

2014

Mind the gap: a new insight into the tip leakage vortex using stereo-PIV

Mohamed Farhat, Cécile Münch-Alligné, Matthieu Dreyer

The tip leakage vortex (TLV), which develops in the clearance between the rotor and the stator of axial hydro turbines, has been studied for decades. Yet, many associated phenomena are still not understood. For instance, it remains unclear how the clearanc ...

Springer2014

Increasing Wind Power Penetration in Autonomous Power Systems through No-Flow Operation of Pelton Turbines

Christophe Nicolet, Basile Kawkabani

The integration of wind power in power systems results in a reduction in greenhouse gas emissions. Thus, it has a positive environmental impact. However, the operation of these power systems becomes increasingly complex, owing mainly to random behaviour of ...

Pergamon-Elsevier Science Ltd2014

Impact of surface roughness on the turbulent wake flow of a turbine blade

Karen Ann J Mulleners, Philipp Gilge

Roughened aeroengine blade surfaces lead to increased friction losses and reduced efficiency of the individual blades. The surface roughness also affects the wake flow of the blade and thus the inflow conditions for the subsequent compressor or turbine sta ...

2014

Interaction of a pulsating vortex rope with the local velocity field in a Francis turbine draft tube

François Avellan, Arthur Tristan Favrel, Christian Landry, Andres Müller, Matthieu Dreyer, Steven Roth, Alberto Bullani

Acoustic resonances in Francis turbines often define undesirable limitations to their operating ranges at high load. The knowledge of the mechanisms governing the onset and the sustenance of these instabilities in the swirling flow leaving the runner is es ...

IOP science2013

Draft tube discharge fluctuation during self-sustained pressure surge: fluorescent particle image velocimetry in two-phase flow

François Avellan, Andres Müller, Nicolas Andreini, Matthieu Dreyer

Hydraulic machines play an increasingly important role in providing a secondary energy reserve for the integration of renewable energy sources in the existing power grid. This requires a significant extension of their usual operating range, involving the p ...

Springer-Verlag2013

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Turbine Francis

Effects of Positive versus Negative Yaw Angles on Wind-Turbine Performance: An Application of BEM Theory

Design and Optimization of an Innovative Solid Oxide Fuel Cell-Gas Turbine Hybrid Cycle for Small Scale Distributed Generation

EPFL-GTT: Group of Thermal Turbomachinery

Flow field UVP measurements of a Y-shape outlet structure

Mind the gap: a new insight into the tip leakage vortex using stereo-PIV

Increasing Wind Power Penetration in Autonomous Power Systems through No-Flow Operation of Pelton Turbines

Impact of surface roughness on the turbulent wake flow of a turbine blade

Model based power optimisation of wind farms

Interaction of a pulsating vortex rope with the local velocity field in a Francis turbine draft tube

Draft tube discharge fluctuation during self-sustained pressure surge: fluorescent particle image velocimetry in two-phase flow

Graph Chatbot

Chattez avec Graph Search

Effects of Positive versus Negative Yaw Angles on Wind-Turbine Performance: An Application of BEM Theory

Impact of surface roughness on the turbulent wake flow of a turbine blade

Design and Optimization of an Innovative Solid Oxide Fuel Cell-Gas Turbine Hybrid Cycle for Small Scale Distributed Generation

Interaction of a pulsating vortex rope with the local velocity field in a Francis turbine draft tube

EPFL-GTT: Group of Thermal Turbomachinery

Model based power optimisation of wind farms

Draft tube discharge fluctuation during self-sustained pressure surge: fluorescent particle image velocimetry in two-phase flow

Flow field UVP measurements of a Y-shape outlet structure

Mind the gap: a new insight into the tip leakage vortex using stereo-PIV

Increasing Wind Power Penetration in Autonomous Power Systems through No-Flow Operation of Pelton Turbines