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Experimental and Numerical Studies of a High-Head Francis Turbine: A Review of the Francis-99 Test Case [PDF]
Energies, 2016 Hydraulic turbines are widely used to meet real-time electricity demands. Computational fluid dynamic (CFD) techniques have played an important role in the design and development of such turbines. The simulation of a complete turbine requires substantial
Chirag Trivedi +2 more
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Correlating Sediment Erosion in Rotary–Stationary Gaps of Francis Turbines with Complex Flow Patterns [PDF]
EnergiesSecondary flows in Francis turbines are induced by the presence of a gap between guide vanes and top–bottom covers and rotating–stationary geometries. The secondary flow developed in the clearance gap of guide vanes induces a leakage vortex that travels ...
Nirmal Acharya +4 more
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Numerical Study on the Dynamic Behavior of a Francis Turbine Runner Model with a Crack [PDF]
Energies, 2018 Crack appearance in the blade is the most common type of fatigue damage in Francis turbines. However, it is sometimes difficult to detect cracks in time using the current monitoring system, even when they are very large.
Ming Zhang +4 more
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Numerical Study on Flow Characteristics in a Francis Turbine during Load Rejection [PDF]
Energies, 2019 Labyrinth seals are not usually included in the numerical models of hydraulic machinery to simplify the geometric modeling, and thereby reduce the calculation burden.
Daqing Zhou +6 more
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Modernization of Francis Water Turbine
Journal of the Mechanical Behavior of Materials, 2000 Obretenov, V.S.
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Machines, 2022 The flow characteristics of the draft tube of a Francis turbine have a significant influence on turbine stability. Numerical simulations were performed for a Francis turbine under three different output conditions of 20%, 100%, and 120% at the rated and ...
Lei Ji +7 more
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Parameter based tool for Francis turbine guide vanes design using coupled MATLAB - ANSYS approach
Journal of Sustainable Development of Energy, Water and Environment Systems, 2022 The complex geometry of Francis turbine components can be defined parametrically so that automatic optimization techniques based on parametrization can be used. This is convenient for a hydraulic redesign of individual turbine elements.
Marija Lazarevikj +4 more
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FSI-analysis of a Francis turbine
, 2012 Sediment erosion in Francis turbines is a big problem in hydropower plants in and around the Himalayas. The sediment composition in the rivers contains high levels of the hard mineral quarts. When the sediments enter the turbine they cause erosive damage to exposed parts such as covers, guide vanes and runner.
Jonas Bergmann-Paulsen
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Using Artificial Neural Network to Solve Multi-objective Optimization of Francis Turbine Runner
Guan'gai paishui xuebao, 2023 【Background】 Technical renovation of turbine equipment in hydropower plant has attracted increased attention due to its low investment, quick return and high economic benefit.
WANG Rongtao, LAI Xide, CHEN Xiaoming
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OpenFOAM for Francis Turbine Transients
OpenFOAM® Journal, 2021 The flexibility and fast responsiveness of hydropower systems make them a reliable solution to overcome the intermittency of renewable energy resources and balance the electrical grid. Therefore, investigating the complex flow fields during such operation is essential to increase the reliability and lifetime of future hydropower systems.
Salehi, Saeed, Nilsson, Håkan
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