A Brief Review of Recent Research on Reversible Francis Pump Turbines in Pumped Storage Plants

Energies, Journal Year: 2025, Volume and Issue: 18(2), P. 394 - 394

Published: Jan. 17, 2025

As the core for energy conversion in pumped storage plants, pump turbine is also a key component process of building clean power grid, owing to its fast and accurate load regulation. This paper introduces current status research development turbines from perspectives significance, design optimization, operational performance, advanced methods, etc. Internal external characteristics such as transient flow evolution, structural vibration, flow-induced noise, etc., not only reflect performance (hydraulic, cavitation, sediment abrasion, stability etc.) but directly affect safe efficient operation system. It worth mentioning that space-time evolution internal an emerging direction, results which can be used predict conditions turbines. Moreover, application intelligent condition monitoring fault diagnosis aim prevent failures accidents plants.

Language: Английский

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The vortex dynamics characteristics in a pump-turbine: A rigid vorticity analysis while varying guide vane openings in turbine mode

Energy, Journal Year: 2023, Volume and Issue: 289, P. 130086 - 130086

Published: Dec. 20, 2023

Language: Английский

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Suppression of vortex rope oscillation and pressure vibrations in Francis turbine draft tube using various strategies

Journal of Hydrodynamics, Journal Year: 2021, Volume and Issue: 33(3), P. 534 - 545

Published: May 20, 2021

Language: Английский

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Investigation of correlation between vorticity, Q, λci, λ2, Δ

Computers & Fluids, Journal Year: 2021, Volume and Issue: 225, P. 104977 - 104977

Published: May 6, 2021

Language: Английский

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Experimental study of the flow field of a high head model pump turbine based on PIV technique

Journal of Hydrodynamics, Journal Year: 2021, Volume and Issue: 33(5), P. 1045 - 1055

Published: Oct. 1, 2021

Language: Английский

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Large eddy simulation of cloud cavitation and wake vortex cavitation around a trailing-truncated hydrofoil

Journal of Hydrodynamics, Journal Year: 2022, Volume and Issue: 34(5), P. 893 - 903

Published: Oct. 1, 2022

Language: Английский

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Hydraulic fluctuations during the pump power-off runaway transient process of a pump turbine with consideration of cavitation effects

Journal of Hydrodynamics, Journal Year: 2021, Volume and Issue: 33(6), P. 1162 - 1175

Published: Dec. 1, 2021

Language: Английский

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Improvement of the SST γ-Reθt transition model for flows along a curved hydrofoil

Journal of Hydrodynamics, Journal Year: 2021, Volume and Issue: 33(3), P. 520 - 533

Published: June 1, 2021

Language: Английский

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Application of Liutex and Entropy Production to Analyze the Influence of Vortex Rope in the Francis-99 Turbine Draft Tube

Tehnicki vjesnik - Technical Gazette, Journal Year: 2022, Volume and Issue: 29(4)

Published: June 22, 2022

The vortex structures in a draft tube of Francis turbine are confused, primarily when cavitation occurs, which may induce severe vibration and noise.Understanding this vortex's periodical precession investigating the rope influence cone is required for stable operation at off-design conditions.This study captured cavitating flow with high accuracy by utilizing SST turbulence ZGB models.The Omega Liutex methods employed compared traditional Q -criterion to determine behavior Francis-99 tube.The result showed that Liutex/Rortex method advantageous over representing structure.The can effectively remove boundary layer's on visual from tube's wall.Moreover, local hydraulic loss distribution was clarified using entropy production.By comparing magnitude production rate, effects were significantly illuminated.

Language: Английский

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Prediction of the Vortex Evolution and Influence Analysis of Rough Bed in a Hydraulic Jump with the Omega-Liutex Method

Tehnicki vjesnik - Technical Gazette, Journal Year: 2023, Volume and Issue: 30(6)

Published: Oct. 26, 2023

The dissipation of energy downstream hydropower projects is a significant issue.The hydraulic jump exciting and widely applied in practice to dissipate energy.Many characteristics have been studied, such as length Lj sequent flow depth y2.However, understanding the evolution vortex structure shows challenge.This study uses RNG k- turbulence model simulate jumps on rough bed.The Omega-Liutex method compared with Q-criterion for capturing jump.The formation, development, shedding at bed jumper are analyzed.The forms rapidly reduces strength bed, resulting fast energy.At block rows 2 nd 3 rd , rope that moves then breaks.The vortex-shedding region represents attenuation flow.Therefore, dissipates kinetic well.Adding reliability determined by Liutex method, vorticity transport equation used compare distribution distribution.The results show further comprehension phenomenon its dissipation.

Language: Английский

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