Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Sébastien Alligné"'
Autor:
François Avellan, Christophe Nicolet, Cécile Münch, Jean Decaix, Andres Müller, Sébastien Alligné
Publikováno v:
Journal of Hydraulic Research. 60:271-282
Hydropower is a key energy conversion technology for stabilizing electrical power. When running at full load, a 3-D cavitation vortex rope develops in Francis turbines that acts as an internal sour...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2332f4ae213c0402a4a10d446ceb7739
https://doi.org/10.1080/00221686.2021.1944922
https://doi.org/10.1080/00221686.2021.1944922
Autor:
Sébastien Alligné, Christophe Nicolet, Drazen Dujic, François Avellan, D. Biner, Cécile Münch-Alligné, N. Hugo, Vlad Hasmatuchi
Publikováno v:
IOP Conference Series: Earth and Environmental Science
The Z’Mutt pumping station, part of the Grande Dixence hydroelectric scheme, is one of the demonstrators of the XFLEX HYDRO project. A 5 MW reversible pump-turbine prototype equipped with a full-size frequency converter (FSFC) is used to investigat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f98de1cfc3c32274285ee903aabf93f
Autor:
N. Hugo, D. Biner, François Avellan, Sébastien Alligné, Vlad Hasmatuchi, Nicolet C, Cécile Münch-Alligné, Drazen Dujic, A Béguin
Publikováno v:
IOP Conference Series: Earth and Environmental Science.
Variable speed hydroelectric units equipped with full size frequency converter (FSFC) offer high operational flexibility enabling fast operating point transitions which increase grid regulation capacities. The XFLEX HYDRO H2020 European research proj
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c31caa0a482d530b645b00cbf7f35621
Autor:
João Gomes Pereira, Elena Vagnoni, Arthur Favrel, Christian Landry, Sébastien Alligné, Christophe Nicolet, François Avellan
Publikováno v:
Mechanical Systems and Signal Processing. 169:108666
Francis turbines operating in full load conditions feature an axisymmetric vortex rotating in the opposite direction of the turbine runner. In low-pressure conditions, the resulting cavitation vortex may enter in an unstable self-exciting process, le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95ba75cb4cc0aad70bc0be15895e9bd7
https://doi.org/10.1016/j.ymssp.2021.108666
https://doi.org/10.1016/j.ymssp.2021.108666
Autor:
J. Gomes Pereira Junior, Arthur Tristan Favrel, Sébastien Alligné, Christophe Nicolet, François Avellan, Christian R. Landry
Publikováno v:
IOP Conference Series: Earth and Environmental Science. 240:022022
The massive penetration of the electrical network by renewable energy sources, such as wind and solar, pushes the operators to extend hydropower plant units operating range to meet the transmission system operator requirements. However, in off-design
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::287c869df4a5e90d8e25dd086e147d74
https://doi.org/10.1088/1755-1315/240/2/022022
https://doi.org/10.1088/1755-1315/240/2/022022
Publikováno v:
Journal of Fluids and Structures. 28:180-193
In pipe systems, pressure and flow fluctuations below cutoff frequency propagate as plane waves along pipes. Depending on the pipe length and propagation velocity, resonance leading to high amplitude pressure fluctuation may occur. At low pressure, c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab12cd05dd2a7bac31ac374e26241a0c
https://doi.org/10.1016/j.jfluidstructs.2011.10.001
https://doi.org/10.1016/j.jfluidstructs.2011.10.001
Autor:
François Avellan, Christophe Nicolet, Basile Kawkabani, Jean-Jacques Simond, Sébastien Alligné
Publikováno v:
International Journal of Fluid Machinery and Systems. 2:324-333
This paper presents a numerical simulation study of the transient behavior of a 2x340MW pump-turbine power plant, where the results show an unstable behavior at runaway. First, the modeling of hydraulic components based on equivalent schemes is prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::445076107106bbf7463f153af26405af
https://doi.org/10.5293/ijfms.2009.2.4.324
https://doi.org/10.5293/ijfms.2009.2.4.324
Autor:
Sébastien Alligné, Keita Yamamoto, Yoshinobu Tsujimoto, François Avellan, Andres Müller, Koichi Yonezawa
Publikováno v:
Journal of Fluids Engineering. 138
Flow instabilities in hydraulic machines often feature oscillating cavitation volumes, which locally introduce compliance and mass flow gain effects. These unsteady characteristics play a crucial role in one-dimensional stability models and can be de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ee8488aa5357716d3b4c488c578b777
https://doi.org/10.1115/1.4031778
https://doi.org/10.1115/1.4031778
Autor:
Keita Yamamoto, Arthur Tristan Favrel, Sébastien Alligné, Andres Müller, François Avellan, Christian R. Landry
Publikováno v:
Journal of Physics: Conference Series. 813:012022
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 analysi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcca6b64639ebc38873fcd36b9b53a72
https://doi.org/10.1088/1742-6596/813/1/012022
https://doi.org/10.1088/1742-6596/813/1/012022
Publikováno v:
Advances in Hydroinformatics ISBN: 9789814451413
At early stage of a hydroelectric project, 1D transient simulations are performed to determine the basic layout of power plant. In this phase, the design of surge tanks is decisive to achieve good dynamic performances of the power plant, with respect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dbc39513a4c79d40a3afeaffc0920f1
https://doi.org/10.1007/978-981-4451-42-0_27
https://doi.org/10.1007/978-981-4451-42-0_27
