Results 21 to 30 of about 650 (181)
Study of the state a Francis turbine [PDF]
Polish Maritime Research, 2013 Abstract This paper presents a methodology to evaluate the technical state of a Francis turbine by shaft rotor dynamic simulation. There are several rotor dynamic criteria that define the technical state of a turbo-machine. To feed the shaft rotor dynamic model this delivers the required information to accomplish the technical assessment.
Zóltowski, M. +2 more
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Optimized Reduction in Draft Tube Pressure Pulsation for a Francis Turbine [PDF]
Journal of Applied Fluid MechanicsAs a core component of hydroelectric power generation, the stable and safe operation of the Francis turbine is very important for the operation of the project. Therefore, attention must be paid to the problem of pressure pulsation in the Francis turbine.
J. Lu, R. Tao
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Applied Sciences, 2023 This paper focuses on a 1000 MW Francis turbine and conducts a numerical analysis of the entire flow passage using computational fluid dynamics (CFD) under steady-state conditions.
Yifan Wang +6 more
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Experimental Flow Performance Investigation of Francis Turbines from Model to Prototype
Applied SciencesInvestigating the flow performance of Francis turbines from model to prototype is a complex but essential process for ensuring reliable and efficient turbine operation in hydropower plants.
Baig Mirza Umar +2 more
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Applied SciencesFrancis turbines, being widely used in hydropower plants, operate under different loads which significantly affect their hydraulic characteristics and structural dynamics.
Xingxing Huang +4 more
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Energies, 2022 The Francis hydro-turbine is a typical nonlinear system with coupled hydraulic, mechanical, and electrical subsystems. It is difficult to understand the reasons for its operational failures, since the main cause of failures is due to the complex ...
Andrey Achitaev +3 more
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Renmin Zhujiang, 2023 In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-
REN Haibo, YU Bo, WANG Kui, WANG Luobin
doaj
Energy Science &Engineering, EarlyView.This study integrates genetic algorithm optimization, CFD simulation, and experimental validation to identify the optimal runner geometry for a gravitational water vortex turbine. The combined approach enhances vortex stability and improves energy conversion efficiency, demonstrating strong agreement between predicted and measured performance ...
Zakaria. A. Mwakitwange, Adam Faraji
wiley +1 more source
Sustainable Development, EarlyView.ABSTRACT The application of circular economy, which aims to maximize efficiency and reduce waste, to renewable energy sources necessitates, given the intermittent nature of the latter, robust energy storage solutions to ensure grid stability and avoid wasting energy.
Ó. Martín‐Llorente +4 more
wiley +1 more source
Wildlife Biology, EarlyView.Renewable energy is vital for reducing carbon emissions and yet its infrastructure poses challenges to biodiversity. While the impacts of wind power on bats and raptors are well‐studied, the effects on elusive species remain largely unknown. The Eurasian woodcock Scolopax rusticola, a nocturnal forest bird, performs characteristic courtship flights at ...
Jan O. Engler +6 more
wiley +1 more source