Results 11 to 20 of about 6,461,686 (138)

OpenFOAM for Francis turbine transients [PDF]

, 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.
Nilsson, Håkan, Nilsson, Håkan,, Nilsson, H\ue5kan, Salehi, Saeed,, Salehi, Saeed   +4 more
core   +1 more source

Rehabilitation of Francis Turbines of Power Plants with Computational Methods

Hittite Journal of Science and Engineering, 2018
Rehabilitation of existing hydroelectric power plants HEPP by redesigning the hydraulic turbines is usually more elaborate than designing a tailor-made turbine for a new plant.
Selin Aradag, Burak Altintas, Kutay Celebioglu, Ece Ayli   +3 more
doaj   +1 more source

Optimized Reduction in Draft Tube Pressure Pulsation for a Francis Turbine [PDF]

Journal of Applied Fluid Mechanics
As 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
doaj   +1 more source

Influence of Axial Installation Deviation on the Hydraulic Axial Force of the 1000 MW Francis Runner in the Rated Operating Condition

Energies, 2023
To study the influence of the axial installation deviation of the runner on the hydraulic axial force of the 1000 MW Francis turbine unit, geometric models of the full flow passage of the Francis turbine with the runner sinking in the axial direction by ...
Yongsheng Liu, Chengming Liu, Yongsheng Zhang, Xingxing Huang, Tao Guo, Lingjiu Zhou, Zhengwei Wang   +6 more
doaj   +1 more source

Experimental Flow Performance Investigation of Francis Turbines from Model to Prototype

Applied Sciences
Investigating 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, Xingxing Huang, Zhengwei Wang   +2 more
doaj   +1 more source

Innovation of Pump as Turbine According to Calculation Model for Francis Turbine Design

Energies, 2021
The effective utilization of micro hydropower sources is often realized through the use of pumps as turbines (PAT). The efficiency of PAT is about the same as that of the original pump. A further increase in efficiency and power output can be achieved by
Martin Polák
doaj   +1 more source

Pressure oscillations and cavitation in a Francis Turbine with a short draft tube

, 2023
reservedLa tesi tratta lo studio del comportamento fluidodinamico di una turbina idraulica tipo Francis. Il primi capitoli trattano della situazione energetica mondiale e italiana, con particolare attenzione al settore idroelettrico. Successivamente, vi
DA RE, LUCA
core  

Flow-Induced Stress Analysis of a Large Francis Turbine Under Different Loads in a Wide Operation Range

Applied Sciences
Francis turbines, being widely used in hydropower plants, operate under different loads which significantly affect their hydraulic characteristics and structural dynamics.
Xingxing Huang, Hua Ou, Hao Huang, Zhengwei Wang, Gang Wang   +4 more
doaj   +1 more source

Research on the Hydraulic Characteristics of 1000 MW Francis Runner: Influence of Radial Installation Deviations

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, Kun Jin, Xingxing Huang, Fei Gai, Zhengwei Wang, Xingmin Liu, Lingjiu Zhou   +6 more
doaj   +1 more source

Dynamic Simulation of Starting and Emergency Conditions of a Hydraulic Unit Based on a Francis Turbine

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, Pavel Ilyushin, Konstantin Suslov, Sergey Kobyletski   +3 more
doaj   +1 more source