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Unsteady assessment and alleviation of inter-blade vortex in Francis turbine

Author

Listed:
  • Sun, Longgang
  • Xu, Hongyang
  • Li, Chenxi
  • Guo, Pengcheng
  • Xu, Zhuofei

Abstract

Inter-blade vortex refers to a specific type vortex cavitation observed in Francis turbines under partial loads and its adverse impact is widely recognized as a crucial factor that limits the safety and stability of hydraulic turbines. The present study endeavors to examine the spatiotemporal evolution attributes of inter-blade vortex and its contribution to the generation of unstable pressure fluctuations. To achieve this, a comprehensive investigation is conducted using a reduced-scale Francis model turbine with low head, combining numerical investigations and visualization experiments. The study demonstrates that the vapor volume associated with the inter-blade vortex experiences periodic pulsation, with a frequency proximate to the rotational frequency of the runner. Within the turbine runner, cavitation exhibits a dynamic cycle of incipience, growth, expansion, and localized collapse. The most remarkable cavitation disintegration occurs at the convergence point of the trailing edge of the runner blade and the band, wherein the most pronounced amplitude of pressure fluctuation is also discerned. In addition, this research establishes a direct correlation between pressure fluctuations and vapor volume, revealing that the acceleration of the vapor volume is accountable for the occurrence of pressure fluctuations with heightened magnitude. Furthermore, an optimization campaign successfully reduces the cavitation volume by 88.58% and 78.99% at two specific points of interest, resulting in the nearly complete elimination of high-amplitude pressure pulsations. Building upon these findings, data mining techniques are implemented to identify that the blade profile at a spanwise height of 0.75 significantly influences the enhancement of turbine hydraulic performance. Additionally, it has been ascertained that the design parameter governing the geometric placement of the blade trailing edge plays a pivotal role in reducing the intensity of the inter-blade vortex. This study yields invaluable insights into the underlying mechanism of unsteady phenomena induced by inter-blade vortex and formulates a hydraulic optimization approach capable of enhancing the operating stability of the Francis turbine.

Suggested Citation

  • Sun, Longgang & Xu, Hongyang & Li, Chenxi & Guo, Pengcheng & Xu, Zhuofei, 2024. "Unsteady assessment and alleviation of inter-blade vortex in Francis turbine," Applied Energy, Elsevier, vol. 358(C).
    • Handle: RePEc:eee:appene:v:358:y:2024:i:c:s0306261923019803
    DOI: 10.1016/j.apenergy.2023.122616
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    References listed on IDEAS

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    1. Salehi, Saeed & Nilsson, Håkan, 2022. "Flow-induced pulsations in Francis turbines during startup - A consequence of an intermittent energy system," Renewable Energy, Elsevier, vol. 188(C), pages 1166-1183.
    2. Liu, Xin & Luo, Yongyao & Wang, Zhengwei, 2016. "A review on fatigue damage mechanism in hydro turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1-14.
    3. Cheng, Huan & Zhou, Lingjiu & Liang, Quanwei & Guan, Ziwu & Liu, Demin & Wang, Zhaoning & Kang, Wenzhe, 2020. "The investigation of runner blade channel vortices in two different Francis turbine models," Renewable Energy, Elsevier, vol. 156(C), pages 201-212.
    4. Trivedi, Chirag & Cervantes, Michel J., 2017. "Fluid-structure interactions in Francis turbines: A perspective review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P1), pages 87-101.
    5. Lihui, Xu & Tao, Guo & Wenquan, Wang, 2022. "Effects of Vortex Structure on Hydraulic Loss in a Low Head Francis Turbine under Overall Operating Conditions Base on Entropy Production Method," Renewable Energy, Elsevier, vol. 198(C), pages 367-379.
    6. Sun, Longgang & Guo, Pengcheng & Luo, Xingqi, 2020. "Numerical investigation on inter-blade cavitation vortex in a Franics turbine," Renewable Energy, Elsevier, vol. 158(C), pages 64-74.
    7. Cheng, Qian & Liu, Pan & Xia, Jun & Ming, Bo & Cheng, Lei & Chen, Jie & Xie, Kang & Liu, Zheyuan & Li, Xiao, 2022. "Contribution of complementary operation in adapting to climate change impacts on a large-scale wind–solar–hydro system: A case study in the Yalong River Basin, China," Applied Energy, Elsevier, vol. 325(C).
    8. Tang, Qinghong & Yu, An & Wang, Yongshuai & Tang, Yibo & Wang, Yifu, 2023. "Numerical analysis of vorticity transport and energy dissipation of inner-blade vortex in Francis turbine," Renewable Energy, Elsevier, vol. 203(C), pages 634-648.
    9. Jiang, Jianhua & Ming, Bo & Liu, Pan & Huang, Qiang & Guo, Yi & Chang, Jianxia & Zhang, Wei, 2023. "Refining long-term operation of large hydro–photovoltaic–wind hybrid systems by nesting response functions," Renewable Energy, Elsevier, vol. 204(C), pages 359-371.
    10. Li, He & Liu, Pan & Guo, Shenglian & Ming, Bo & Cheng, Lei & Yang, Zhikai, 2019. "Long-term complementary operation of a large-scale hydro-photovoltaic hybrid power plant using explicit stochastic optimization," Applied Energy, Elsevier, vol. 238(C), pages 863-875.
    11. Unterluggauer, Julian & Sulzgruber, Verena & Doujak, Eduard & Bauer, Christian, 2020. "Experimental and numerical study of a prototype Francis turbine startup," Renewable Energy, Elsevier, vol. 157(C), pages 1212-1221.
    12. Julian Unterluggauer & Anton Maly & Eduard Doujak, 2019. "Investigation on the Impact of Air Admission in a Prototype Francis Turbine at Low-Load Operation," Energies, MDPI, vol. 12(15), pages 1-19, July.
    13. Xin Liu & Yongyao Luo & Alexandre Presas & Zhengwei Wang & Lingjiu Zhou, 2018. "Cavitation Effects on the Structural Resonance of Hydraulic Turbines: Failure Analysis in a Real Francis Turbine Runner," Energies, MDPI, vol. 11(9), pages 1-16, September.
    14. Liu, Dong & Li, Chaoshun & Malik, O.P., 2021. "Nonlinear modeling and multi-scale damping characteristics of hydro-turbine regulation systems under complex variable hydraulic and electrical network structures," Applied Energy, Elsevier, vol. 293(C).
    15. Sotoudeh, Nahale & Maddahian, Reza & Cervantes, Michel J., 2020. "Investigation of Rotating Vortex Rope formation during load variation in a Francis turbine draft tube," Renewable Energy, Elsevier, vol. 151(C), pages 238-254.
    16. Tao Guo & Lihui Xu & Wenquan Wang, 2021. "Influence of Upstream Disturbances on the Vortex Structure of Francis Turbine Based on the Criteria of Identification of Various Vortexes," Energies, MDPI, vol. 14(22), pages 1-21, November.
    17. Sun, Longgang & Guo, Pengcheng & Yan, Jianguo, 2021. "Transient analysis of load rejection for a high-head Francis turbine based on structured overset mesh," Renewable Energy, Elsevier, vol. 171(C), pages 658-671.
    18. Goyal, Rahul & Gandhi, B.K. & Cervantes, Michel J., 2018. "PIV measurements in Francis turbine – A review and application to transient operations," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 2976-2991.
    19. Liu, Hailiang & Brown, Tom & Andresen, Gorm Bruun & Schlachtberger, David P. & Greiner, Martin, 2019. "The role of hydro power, storage and transmission in the decarbonization of the Chinese power system," Applied Energy, Elsevier, vol. 239(C), pages 1308-1321.
    20. Kumar, Pardeep & Saini, R.P., 2010. "Study of cavitation in hydro turbines--A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(1), pages 374-383, January.
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