CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant
The flexibility of the FMHL+ pumped storage power plants can be improved by extending the hydraulic short-circuit operating mode. CFD simulations of the flow in three bifurcations are performed to calculate the head losses and to investigate the flow topology in the pipes. A specific attention is pa...
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MDPI AG
2024-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/2/473 |
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| author | Jean Decaix Mathieu Mettille Nicolas Hugo Bernard Valluy Cécile Münch-Alligné |
| author_facet | Jean Decaix Mathieu Mettille Nicolas Hugo Bernard Valluy Cécile Münch-Alligné |
| author_sort | Jean Decaix |
| collection | DOAJ |
| description | The flexibility of the FMHL+ pumped storage power plants can be improved by extending the hydraulic short-circuit operating mode. CFD simulations of the flow in three bifurcations are performed to calculate the head losses and to investigate the flow topology in the pipes. A specific attention is paid to the influence of the curvature correction that has been developed for two-equation RANS turbulence models. For the T-junction considered, the activation of the curvature correction influences the head losses whereas for the two Y-junctions computed, no effect is observed. By comparing with the Y-junctions, the T-junction leads to higher head losses and helicity in the pipes downstream of the bifurcation. Compared to the current the intragroup hydraulic short circuit operation permitted, the intergroup and interplant hydraulic short circuit mode should provide better performances with possible gains until of −55% in head losses and −94% in helicity upstream of the turbines. |
| first_indexed | 2024-03-08T10:58:21Z |
| format | Article |
| id | doaj.art-8af7f2172a2a41ddb99ea34e5999287a |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T10:58:21Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8af7f2172a2a41ddb99ea34e5999287a2024-01-26T16:20:29ZengMDPI AGEnergies1996-10732024-01-0117247310.3390/en17020473CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power PlantJean Decaix0Mathieu Mettille1Nicolas Hugo2Bernard Valluy3Cécile Münch-Alligné4Institute of Sustainable Energy, School of Engineering, HES-SO Valais-Wallis, 1950 Sion, SwitzerlandInstitute of Sustainable Energy, School of Engineering, HES-SO Valais-Wallis, 1950 Sion, SwitzerlandAlpiq, 1003 Lausanne, SwitzerlandAlpiq, 1003 Lausanne, SwitzerlandInstitute of Sustainable Energy, School of Engineering, HES-SO Valais-Wallis, 1950 Sion, SwitzerlandThe flexibility of the FMHL+ pumped storage power plants can be improved by extending the hydraulic short-circuit operating mode. CFD simulations of the flow in three bifurcations are performed to calculate the head losses and to investigate the flow topology in the pipes. A specific attention is paid to the influence of the curvature correction that has been developed for two-equation RANS turbulence models. For the T-junction considered, the activation of the curvature correction influences the head losses whereas for the two Y-junctions computed, no effect is observed. By comparing with the Y-junctions, the T-junction leads to higher head losses and helicity in the pipes downstream of the bifurcation. Compared to the current the intragroup hydraulic short circuit operation permitted, the intergroup and interplant hydraulic short circuit mode should provide better performances with possible gains until of −55% in head losses and −94% in helicity upstream of the turbines.https://www.mdpi.com/1996-1073/17/2/473CFDhydraulic short-circuitbifurcationshead lossessecondary flowturbulence model |
| spellingShingle | Jean Decaix Mathieu Mettille Nicolas Hugo Bernard Valluy Cécile Münch-Alligné CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant Energies CFD hydraulic short-circuit bifurcations head losses secondary flow turbulence model |
| title | CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant |
| title_full | CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant |
| title_fullStr | CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant |
| title_full_unstemmed | CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant |
| title_short | CFD Investigation of the Hydraulic Short-Circuit Mode in the FMHL/FMHL+ Pumped Storage Power Plant |
| title_sort | cfd investigation of the hydraulic short circuit mode in the fmhl fmhl pumped storage power plant |
| topic | CFD hydraulic short-circuit bifurcations head losses secondary flow turbulence model |
| url | https://www.mdpi.com/1996-1073/17/2/473 |
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