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

Energies, Год журнала: 2025, Номер 18(2), С. 394 - 394

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2023, Номер 289, С. 130086 - 130086

Опубликована: Дек. 20, 2023

Язык: Английский

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

Journal of Hydrodynamics, Год журнала: 2021, Номер 33(3), С. 534 - 545

Опубликована: Май 20, 2021

Язык: Английский

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

Computers & Fluids, Год журнала: 2021, Номер 225, С. 104977 - 104977

Опубликована: Май 6, 2021

Язык: 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, Год журнала: 2021, Номер 33(5), С. 1045 - 1055

Опубликована: Окт. 1, 2021

Язык: Английский

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

Journal of Hydrodynamics, Год журнала: 2022, Номер 34(5), С. 893 - 903

Опубликована: Окт. 1, 2022

Язык: Английский

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Solid–Liquid Flow Analysis of Francis‐99 Turbine Runner: Effects of Sediment Concentration

Energy Science & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Май 26, 2025

ABSTRACT This study examines the behavior of solid–liquid two‐phase flow within runner Francis‐99 turbine. Numerical simulations were carried out by Ansys Fluent software using Mixture multiphase model along with Realizable k‐ε turbulence to analyze in turbine runner. The sediment distribution on surface was evaluated for different concentrations (SC = 500, 1500, 2500, 5000, 8000, and 11,500 ppm). results indicate that particles primarily adhere surfaces blades, displaying a uniform distribution. With increasing concentration, volume fraction blade rises significantly. both long short blades exhibits similarity, peak concentration observed at trailing edge mid‐sections blades. Additionally, is greater pressure side than suction side. aims expand research characteristics

Язык: 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, Год журнала: 2021, Номер 33(6), С. 1162 - 1175

Опубликована: Дек. 1, 2021

Язык: Английский

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

Journal of Hydrodynamics, Год журнала: 2021, Номер 33(3), С. 520 - 533

Опубликована: Июнь 1, 2021

Язык: 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, Год журнала: 2022, Номер 29(4)

Опубликована: Июнь 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.

Язык: Английский

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