Results 61 to 70 of about 650 (181)

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Solid–Liquid Flow Analysis of Francis‐99 Turbine Runner: Effects of Sediment Concentration

open access: yesEnergy Science & Engineering
This study examines the behavior of solid–liquid two‐phase flow within the runner of the Francis‐99 turbine. Numerical simulations were carried out by Ansys Fluent software using the Mixture multiphase flow model along with the Realizable k‐ε turbulence ...
Kang Xu   +6 more
doaj   +1 more source

Effect of Guide Vane Pitch Circle Diameter on Pressure Fluctuation in Vaneless Zone of Francis Turbine

open access: yesJournal of Applied Fluid Mechanics, 2020
In a Francis turbine, the guide vanes are arranged in the direction of flow behind the stay vanes. And as it is generally believed that the outlet angle of water after it flows through the spiral case and stay vanes is fixed, the flow and flow ...
Z. J. Wu, W. K. Liang, W. Dong
doaj  

Advanced Ceramics in Aerospace and Defense: The Interrelationship between Traditional and Additive Manufacturing Approaches

open access: yesAdvanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Additive manufacturing revolutionizes production by enabling on‐demand, customized, and sustainable manufacturing with streamlined supply chains. While metal and polymer AM are well‐established, advanced ceramic AM is rapidly emerging, overcoming traditional material challenges.
Kateryna Oleksandrivna Shvydyuk   +2 more
wiley   +1 more source

Effect of Guide Vane Clearance Gap on Francis Turbine Performance

open access: yesEnergies, 2016
Francis turbine guide vanes have pivoted support with external control mechanism, for conversion of pressure to kinetic energy and to direct them to runner vanes.
Ravi Koirala   +2 more
doaj   +1 more source

The flow deteriorations in course of the partial load operation of the middle specific speed Francis turbine

open access: yesOpen Engineering, 2019
The article presents the results of experimental and numerical tests of a water turbine. As the object of the research the middle size Francis turbine, characterized by a middle value of specific speed, was taken into consideration.
Szulc Przemyslaw, Machalski Artur
doaj   +1 more source

PREDICTION OF EROSION EFFECT DUE TO CAVITATION ON AL-MOSUL POWER PLANT TURBINE

open access: yesJournal of Engineering, 2008
In the field of hydraulic power plant, the cavitation is responsible of sever erosion which requires periodic unit shutdowns for inspection and repairs. Al-Mosul hydroelectric power plant is chosen as model in this study. Computer programs are developed
Jafar M. Hassan, Laith W. Ismail
doaj   +1 more source

CFD Analysis in Francis Turbine Performance- A Review

open access: yesJournal of Advanced Mechanical Sciences, 2022
In any hydro power plant its turbine enacts a major role in deciding the competence as lot of phenomena depends on it if turbine works smoother then performance achieved by plant will be more and for that analysis of turbine becomes a need of the time ...
Akash Gupta
doaj  

Flow Field Analysis of Francis Turbine Draft Tube using POD at Design and Part Load Operating Conditions [PDF]

open access: yesJournal of Applied Fluid Mechanics
The hydraulic turbines, especially Francis turbines, frequently run at part load (PL) conditions to meet the dynamic energy needs. The flow field at the runner exit changes significantly with a change in the operating point.
S. Kumar, M. J. Cervantes, B. K. Gandhi
doaj   +1 more source

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