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Article

Efficiency Assessment for Rehabilitated Francis Turbines Using URANS Simulations

Département de Génie Mécanique, École de Technologie Supérieure, Montréal, 1100 rue Notre Dame Ouest, Montreal, QC H3C 1K3, Canada
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Academic Editor: Jochen Aberle
Water 2021, 13(14), 1883; https://doi.org/10.3390/w13141883
Received: 16 May 2021 / Revised: 27 June 2021 / Accepted: 30 June 2021 / Published: 7 July 2021
(This article belongs to the Special Issue Advances and Challenges in Hydropower)
Due to the large number of aging hydraulic turbines in North America, rehabilitation is a growing market as these turbines have low efficiency compared to modern ones. Computational Fluid Dynamics identifies components with poor hydraulic performance. The models often used in industry are based on individually analyzing the sub-components of a turbine instead of full turbine simulations due to computational and time limitations. An industrial case has shown that such analyses may lead to underestimating the efficiency increases by modifying the stay vane. The unsteady full turbine simulation proposes to simulate all components simultaneously to assess this efficiency augmentation due to stay vane rehabilitation. The developed simulation methodology is used to evaluate the efficiency increase and the flow of two rehabilitated turbines with stay vane modifications. Comparison with model tests shows the accuracy of the simulations. However, the methodology used shows imprecision in predicting the efficiency increase compared to model tests. Further works should consider the use of more complex flow modeling methods to measure the efficiency increase by the stay vane modifications. View Full-Text
Keywords: Computational Fluid Dynamics; hydraulic turbine; Francis turbine; hydraulic rehabilitation; efficiency Computational Fluid Dynamics; hydraulic turbine; Francis turbine; hydraulic rehabilitation; efficiency
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MDPI and ACS Style

Martineau Rousseau, P.; Soulaïmani, A.; Sabourin, M. Efficiency Assessment for Rehabilitated Francis Turbines Using URANS Simulations. Water 2021, 13, 1883. https://doi.org/10.3390/w13141883

AMA Style

Martineau Rousseau P, Soulaïmani A, Sabourin M. Efficiency Assessment for Rehabilitated Francis Turbines Using URANS Simulations. Water. 2021; 13(14):1883. https://doi.org/10.3390/w13141883

Chicago/Turabian Style

Martineau Rousseau, Philippe, Azzeddine Soulaïmani, and Michel Sabourin. 2021. "Efficiency Assessment for Rehabilitated Francis Turbines Using URANS Simulations" Water 13, no. 14: 1883. https://doi.org/10.3390/w13141883

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