Flow-Induced Fatigue Damage of Large Francis Turbines Under Multiple Operating Loads
Applied SciencesThe Francis runner is a critical component of the Francis turbine generator unit, playing a central role in converting water energy into rotating mechanical energy that drives the generator in hydropower stations.
Pinghu Liu +3 more
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An Ensemble Prognostic Method of Francis Turbine Units Using Low-Quality Data under Variable Operating Conditions. [PDF]
Sensors (Basel), 2022 Duan R, Liu J, Zhou J, Wang P, Liu W.
europepmc +1 more source
Design optimization method for Francis turbine
IOP Conference Series: Earth and Environmental Science, 2014 This paper presents a design optimization system coupled CFD. Optimization algorithm of the system employs particle swarm optimization (PSO). Blade shape design is carried out in one kind of NURBS curve defined by a series of control points. The system was applied for designing the stationary vanes and the runner of higher specific speed francis ...
H Kawajiri, Y Enomoto, S Kurosawa
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Effect of steam addition on the flow field and NOx emissions for Jet-A in an aircraft combustor [PDF]
, 2016 The steam injection technology for aircraft engines is gaining rising importance because of the strong limitations imposed by the legislation for NOx reduction in airports.
Hu, Chunbo +3 more
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Flow Field Analysis of Francis Turbine Draft Tube using POD at Design and Part Load Operating Conditions [PDF]
Journal of Applied Fluid MechanicsThe hydraulic turbines, especially Francis turbines, frequently run at part load (PL) conditions to meet the dynamic energy needs. The flow field at the runner exit changes significantly with a change in the operating point.
S. Kumar, M. J. Cervantes, B. K. Gandhi
doaj +1 more source
Impact of hybrid renewable energy systems on short circuit levels in distribution networks [PDF]
, 2014 The effects of the distributed generation can be classified as environmental, technical and economical effects. It is playing a very vital role for improving the voltage profiles in electrical power systems.
Afifi, SN, Darwish, MK
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Development of a regenerative pump impeller using rapid manufacturing techniques [PDF]
, 2010 This paper presents a method of rapid manufacture used in the development of a regenerative pump impeller. Rapid manufacturing technology was used to create complex impeller blade profiles for testing as part of a regenerative pump optimisation process ...
Quail, Francis J. +2 more
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Methodology for Risk Assessment of Part Load Resonance in Francis Turbine Power Plant [PDF]
, 2007 At low flow rate operation, Francis turbines feature a cavitating vortex rope in the draft tube resulting from the swirling flow of the runner outlet. The unsteady pressure field related to the precession of the vortex rope induces plane wave propagating
Allenbach, Philippe +5 more
core
Testing and Numerical Analysis of Abnormal Pressure Pulsations in Francis Turbines
EnergiesDuring the flood season, Francis turbines often operate under low-head and full-load conditions, frequently experiencing significant pressure pulsations, posing potential threats to the safe and stable operation of the units.
Lu Jia +4 more
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Comprehensive Hydraulic Improvement and Parametric Analysis of a Francis Turbine Runner
Energies, 2019 Hydraulic turbines are usually required to operate in a wide range. The operation at off-design conditions not only reduces the unit efficiency, but also significantly deteriorates the dynamic stability of the turbines.
Zhe Ma +3 more
doaj +1 more source