Publications associées à Énergie hydraulique

Computational hydraulic modelling of fine sediment stirring and evacuation through the power waterways at the Trift reservoir

Anton Schleiss, Pedro Filipe De Almeida Manso, Azin Amini, Célestin Leupi, Sara Venuleo

Taking advantage of the withdrawal of some glaciers, several new dams will eventually be constructed in Switzerland in the coming years as a part of the 2050 energy strategy. The Trift dam, located in Berner Oberlands in Switzerland, is one of these new pr ...

2017

Part Load Vortex Rope as a Global Unstable Mode

François Avellan, François Gallaire, Simon Pasche

Renewable energy sources (RES) have reached 23.7% of the worldwide electrical generation production in 2015. The hydraulic energy contribution amounts to 16.6% and comes mainly form large-scale hydropower plants, where Francis turbines represents 60% of th ...

American Society of Mechanical Engineers2017

Not if, but when? Simulating the impact of timing the nuclear phase-out in Switzerland

Matthias Finger, Reinier Verhoog, Paul Adrianus Van Baal

Swiss electricity companies are faced with uncertainty with regards to the future operation of nuclear power plants in the country. After Fukushima in 2011, the government decided on a gradual phase-out, but only provided a tentative planning. Hence, no ne ...

2017

Fluid-structure interaction mechanisms leading to dangerous power swings in Francis turbines at full load

François Avellan, Arthur Tristan Favrel, Christian Landry

Hydropower plants play an important regulatory role in the large scale integration of volatile renewable energy sources into the existing power grid. This duty however requires a continuous extension of their operating range, provoking the emergence of com ...

Elsevier2017

RANS computations for identification of 1-D cavitation model parameters: application to full load cavitation vortex rope

François Avellan, Christophe Nicolet, Andres Müller, Sébastien Alligné

Due to the massive penetration of alternative renewable energies, hydropower is a key energy conversion technology for stabilizing the electrical power network by using hydraulic machines at off design operating conditions. At full load, the axisymmetric c ...

2017

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 ...

2017

Assessment of Power Swings in Hydropower Plants Through High-Order Modeling and Eigenanalysis

Christophe Nicolet, Basile Kawkabani, Pedro Camilo de Oliveira e Silva

POWER plants are subject to introduce disturbances in the power grid, resulting from interactions with the dynamical behavior of the energy source subsystem. In the case of hydropower plants when used to compensate for variations of power generation and co ...

2017

Fine sediment routing in a cascade of alpine reservoirs: Influence of the inlet angle on settling of fine sediments

Anton Schleiss, Pedro Filipe De Almeida Manso, Sebastián Guillén Ludeña

Reservoir sedimentation is, at present, one of the main concerns in the operational management of dams. The resulting reduction of storage capacity has negative impacts on the hydropower production, flood protection, and availability of water for irrigatio ...

2017

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Énergie hydraulique

Dynamic water allocation policies improve the global efficiency of storage systems

Modification of hydropower storage operation to cope with climate change effects in Switzerland.

Computational hydraulic modelling of fine sediment stirring and evacuation through the power waterways at the Trift reservoir

Part Load Vortex Rope as a Global Unstable Mode

Not if, but when? Simulating the impact of timing the nuclear phase-out in Switzerland

Fluid-structure interaction mechanisms leading to dangerous power swings in Francis turbines at full load

RANS computations for identification of 1-D cavitation model parameters: application to full load cavitation vortex rope

On the sloshing free surface in the draft tube cone of a Francis turbine operating in synchronous condenser mode

Assessment of Power Swings in Hydropower Plants Through High-Order Modeling and Eigenanalysis

Fine sediment routing in a cascade of alpine reservoirs: Influence of the inlet angle on settling of fine sediments

Graph Chatbot

Chattez avec Graph Search

Dynamic water allocation policies improve the global efficiency of storage systems

Modification of hydropower storage operation to cope with climate change effects in Switzerland.

Not if, but when? Simulating the impact of timing the nuclear phase-out in Switzerland

Part Load Vortex Rope as a Global Unstable Mode

RANS computations for identification of 1-D cavitation model parameters: application to full load cavitation vortex rope

On the sloshing free surface in the draft tube cone of a Francis turbine operating in synchronous condenser mode

Assessment of Power Swings in Hydropower Plants Through High-Order Modeling and Eigenanalysis

Computational hydraulic modelling of fine sediment stirring and evacuation through the power waterways at the Trift reservoir

Fluid-structure interaction mechanisms leading to dangerous power swings in Francis turbines at full load

Fine sediment routing in a cascade of alpine reservoirs: Influence of the inlet angle on settling of fine sediments