Results 21 to 30 of about 6,461,686 (138)
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
Techno‐Economic Assessment of Biomethane and Biohydrogen Production From Victorian Wheat Straw
Carbon Energy, EarlyView.Techno‐economic assessment of biomethane and biohydrogen production from Victorian wheat straw. Off‐grid renewable photovoltaic energy with a price down to 0.95 ¢/kWh was applied. Both approaches can make positive profits and negative carbon footprints.
Shuanglong Tan +7 more
wiley +1 more source
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
Determination of wind turbine far wake using actuator disk [PDF]
, 2014 The growth in size of wind turbines over the last years is significant. The rotor diameter becomes somehow comparable to atmospheric boundary layer at the land surface. In this case the assumption of uniform velocity of upcoming wind cannot be valid. The
AMER, Rodeyna +2 more
core
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
Investigation of wind turbine flow and wake [PDF]
, 2014 This paper is dedicated to the investigation and analysis of wind turbine wake. An experimental work is undertaken in wind tunnel on a horizontal axis wind turbine model.
MASSOUH, Fawaz, DOBREV, Ivan
core
Natural Resource Modeling, Volume 39, Issue 4, November 2026.ABSTRACT Landscapes provide a range of ecosystem services including food production, biodiversity conservation and recreational value. Increasingly, landscapes are also used to generate energy. While this is essential for achieving climate mitigation targets, it affects biodiversity and the appearance of rural landscapes, potentially leading to public ...
Charlotte Gerling, Frank Wätzold
wiley +1 more source
Flow-Induced Strength Analysis of Large Francis Turbine Under Extended Load Range
Applied SciencesTo meet the load requirements of the power grid, the hydroelectric power plants need to extend the operational load range of the turbine units, which are often operated under off-design operating conditions.
Xingping Liu +3 more
doaj +1 more source
Do not be Afraid of Small High-Speed Francis Turbines
Journal of Mechanical Engineering, 2018 In the first quarter of the last century hydraulic power plants were equipped with high-speed Francis turbines even in the situation when a contemporary project manager would suggest Kaplan turbine. The reason is simple. Mr.
Libor Koudelka
doaj +1 more source
Energies, 2022 This article presents a study on the performance characteristics of a Francis turbine operating with various guide vane openings to determine the best operating point based on unit quantities.
Megavath Vijay Kumar +8 more
doaj +1 more source