CFD investigation of complex phenomena in s-shape region of reversible pump-turbine
| Autor: | R. Fortes-Patella, L. Balarac, C. Jacquet, J. B. Houdeline |
|---|---|
| Přispěvatelé: | Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), ALSTOM (ALSTOM Hydro France), SuperGrid Institute SAS, Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Fortes Patella, Regiane |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Piping [SPI] Engineering Sciences [physics] Turbulence business.industry Flow (psychology) [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] 02 engineering and technology Mechanics Computational fluid dynamics 01 natural sciences 7. Clean energy Turbine 010305 fluids & plasmas [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] [SPI]Engineering Sciences [physics] 020303 mechanical engineering & transports 0203 mechanical engineering 0103 physical sciences Head (vessel) Transient (oscillation) Surge business Simulation ComputingMilieux_MISCELLANEOUS |
| Zdroj: | CILAMCE 2016, XXXVII Iberian Latin American Congress on Computational Methods in Engineering CILAMCE 2016, XXXVII Iberian Latin American Congress on Computational Methods in Engineering, 2016, Brasilia, Brazil IOP Conference Series: Earth and Environmental Science IOP Conference Series: Earth and Environmental Science, IOP Publishing, 2016, 49, pp.042010. ⟨10.1088/1755-1315/49/4/042010⟩ |
| ISSN: | 1755-1307 1755-1315 |
| DOI: | 10.1088/1755-1315/49/4/042010⟩ |
| Popis: | Pumped Storage Plants (PSP) using reversible pump-turbines offer the possibility to store large amounts of energy with high efficiency and at reasonable cost. For reversible high head pump-turbines, the characteristic curves exhibit an S-shape in the turbine, turbine break and reverse pump quadrants. This S-shape leads to unstable behaviour of the turbine when coupling to the grid (for small guide vane opening) or to surge transient phenomena in case of emergency shutdown (for large guide vane opening). Typically the piping system can be exposed to severe pressure oscillations. Furthermore, the flow inside the pump-turbine is characterized by unsteady complex hydrodynamic phenomena. These phenomena have to be deeply investigated to improve the behaviour of the pump-turbine in such operating conditions. This paper focuses on the numerical analysis of the flow in a reversible pump-turbine in the S-shape region. For this application, we used unsteady computation applying the SAS-SST turbulence model and considered a full computational domain that includes all the components of the pump-turbine. The study highlights the evolution of the flow behaviour for a large range of operating conditions: from the optimal efficiency point to the zero discharge condition, for a given constant guide vane opening. Keywords: CFD, pump-turbine, storage, S-shape, unsteady |
| Databáze: | OpenAIRE |
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