Results 1 to 10 of about 297 (88)

Experimental and Numerical Studies of a High-Head Francis Turbine: A Review of the Francis-99 Test Case

Energies, 2016
Hydraulic turbines are widely used to meet real-time electricity demands. Computational fluid dynamic (CFD) techniques have played an important role in the design and development of such turbines. The simulation of a complete turbine requires substantial
Chirag Trivedi, Michel J. Cervantes, Ole G. Dahlhaug   +2 more
doaj   +3 more sources

Experimental and Numerical Simulation Study on the Flow Characteristics of the Draft Tube in Francis Turbine

Machines, 2022
The flow characteristics of the draft tube of a Francis turbine have a significant influence on turbine stability. Numerical simulations were performed for a Francis turbine under three different output conditions of 20%, 100%, and 120% at the rated and ...
Lei Ji, Lianchen Xu, Yuanjie Peng, Xiaoyi Zhao, Zhen Li, Wen Tang, Demin Liu, Xiaobing Liu   +7 more
doaj   +1 more source

Parameter based tool for Francis turbine guide vanes design using coupled MATLAB - ANSYS approach

Journal of Sustainable Development of Energy, Water and Environment Systems, 2022
The complex geometry of Francis turbine components can be defined parametrically so that automatic optimization techniques based on parametrization can be used. This is convenient for a hydraulic redesign of individual turbine elements.
Marija Lazarevikj, Filip Stojkovski, Zoran Markov, Igor Iliev, Ole G. Dahlhaug   +4 more
doaj   +1 more source

Using Artificial Neural Network to Solve Multi-objective Optimization of Francis Turbine Runner

Guan'gai paishui xuebao, 2023
【Background】 Technical renovation of turbine equipment in hydropower plant has attracted increased attention due to its low investment, quick return and high economic benefit.
WANG Rongtao, LAI Xide, CHEN Xiaoming
doaj   +1 more source

Assessment of a Francis Micro Hydro Turbine Performance Installed in a Wastewater Treatment Plant

Energies, 2023
The purpose of this research work was to examine the hydroelectric potential of wastewater treatment plants by harnessing the kinetic and/or potential energy of treated wastewater for electricity generation.
Paweł Tomczyk, Krzysztof Mastalerek, Mirosław Wiatkowski, Alban Kuriqi, Jakub Jurasz   +4 more
doaj   +1 more source

CFD Investigation for Surface Roughness Effects on the Hydrodynamics of Cavitating Turbulent Flow through a Low Head Prototype Francis Turbine [PDF]

Journal of Applied Fluid Mechanics, 2022
Surface characteristics have an important role in defining hydrodynamics of the flow through hydraulic machines. Surface roughness is a critical parameter that contributes to altering near-wall flow features and promotes frictional losses in various ...
G. Tiwari, J. Kumar, V. Prasad, V. K. Patel   +3 more
doaj   +1 more source

Experimental Investigation of the Action Mechanism of the Draft Tube Pressure Pulsation in Prototype Francis Turbines [PDF]

Journal of Applied Fluid Mechanics
The draft tube pressure pulsation (DTPP) in the Francis turbine could decrease the whole stability of the hydropower unit and cause fatigue damages. In addition, the propagation and action mechanism of the DTPP in the Francis turbine have not been fully ...
W. Wang, J. Wei, J. Duan, Z. Deng, J. He
doaj   +1 more source

Numerical study of the influence of blade inlet design parameters on the internal flow characteristics and energy performance of a Francis turbine

AIP Advances, 2023
One of the challenges of hydraulic turbine design is the creation of a conveyor with high hydraulic performance in accordance with the parameters of the hydraulic energy.
Xiaoming Chen, Kaige Wu, Peng Shu, Qiuyu Chen, Qiuqin Gou   +4 more
doaj   +1 more source

Stability Analysis of Vaneless Space in High-Head Pump-Turbine under Turbine Mode: Computational Fluid Dynamics Simulation and Particle Imaging Velocimetry Measurement

Machines, 2022
When the Francis-type reversible pump-turbine runs under partial load, the pressure pulsation amplitude and frequency in vaneless space are high, posing a serious threat to the stability of unit operation.
Wanquan Deng, Lianchen Xu, Zhen Li, Wen Tang, Xiaolong Wang, Linmin Shang, Demin Liu, Xiaobing Liu   +7 more
doaj   +1 more source

Performance Analysis of a Francis Turbine under Various Operating Conditions using CFD [PDF]

E3S Web of Conferences
Hydropower is one of the most efficient renewable energy technologies. The reaction turbines have application in very wide range of hydro power projects. The turbines are main important components of any hydro power plant.
Kumar Prashant, Singal Sunil Kumar, Gohil Pankaj   +2 more
doaj   +1 more source