Results 31 to 40 of about 5,160 (221)

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

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

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

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

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

The Francis Pump Turbine With Stochastic Blades

, 2012
In the article are introduced a special hydraulic designs of pump Francis turbines. There are compared characteristics of classical pump Francis turbine and stochastic blade pumps Francis turbine.
Veselý, Jindřich, Pochylý, František, Haluza, Miloslav   +2 more
core   +1 more source

An on-line monitoring method for the flow excitation in francis hydraulic turbine based on dynamics [PDF]

, 2022
During the operation of hydraulic turbine, the vibration often exceeds the standard due to flow excitation, which affects the safe and stable operation of the hydraulic turbine.
Zhang, Guangzheng, Li, Zhaojun, Chen, Jiaquan, Liu, Fuxiu   +3 more
core   +1 more source

Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening

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  

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