Results 11 to 20 of about 650 (181)

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

OpenFOAM for Francis Turbine Transients

OpenFOAM® Journal, 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. Therefore, investigating the complex flow fields during such operation is essential to increase the reliability and lifetime of future hydropower systems.
Salehi, Saeed, Nilsson, Håkan
openaire   +2 more sources

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

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

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

Numerical research of cavitation on Francis turbine runners

International Journal of Hydrogen Energy, 2017
Francis turbines, as other hydraulic turbines, are custom-designed for nominal operating conditions specific to each power plant. However, they may need to be operated at off design flow conditions because of variable reservoir levels and flowrates. Operating the turbine at off-design points can cause cavitation.
Kutay Celebioglu, Burak Altintas, Selin Aradag, Yigit Tascioglu   +3 more
openaire   +4 more sources