Results 41 to 50 of about 632 (187)
EnergiesEstablishing a mathematical model of a Francis turbine is the foundation for the simulation of hydropower station operation and is of great significance for the analysis of the hydropower station’s transient process.
Youhan Deng +9 more
doaj +1 more source
River Research and Applications, Volume 42, Issue 1, Page 40-59, January 2026.ABSTRACT The upstream migration of juvenile American eels (Anguilla rostrata) is frequently obstructed by dams and other in‐stream barriers, leading to habitat loss and fragmentation, factors that are believed to contribute to the species' population decline.
Felix Eissenhauer +4 more
wiley +1 more source
IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.This review synthesizes academic works on hybridized hydropower systems, focusing on control strategies and energy storage sizing to address objectives such as operational cost reduction (wear mitigation in Kaplan/Francis turbines), revenue enhancement through primary frequency regulation, and resilience improvements like black‐start capability.
Viktor Döhlen +2 more
wiley +1 more source
Journal of Sustainable Development of Energy, Water and Environment Systems, 2021 Compared to a traditional turbine (Kaplan, Francis, Pelton), pumps operated as turbine are a good alternative for micro hydroelectric power plants thanks to their low cost and easy availability.
Jonathan Graciano-Uribe +2 more
doaj +1 more source
Flow Regulation in a T‐Shaped Mixing Channel Using a Proportional‐Integral‐Derivative Controller
The Journal of Engineering, Volume 2026, Issue 1, January/December 2026.This study investigates mixed convection in a 2D T‐shaped channel with a heated cylinder, employing a PID controller to regulate airflow and maintain consistent outlet temperatures. Using the Galerkin finite element method (GFEM), the effects of varying PID parameters on system stability and response time are analysed.
Siam Abrar Saad, Nahid Hasan, Sumon Saha
wiley +1 more source
Numerical study on unidirectional fluid–solid coupling of Francis turbine runner
Advances in Mechanical Engineering, 2015 To analyze the fluid–solid coupling stress characteristics of the Francis turbine runner comprehensively, based on the Reynolds-averaged Navier–Stokes equations and shear stress transport k-ω turbulence model, this article performs numerical simulation ...
Kan Kan +4 more
doaj +1 more source
Integrating Composite Materials Throughout the Military Sector: A Review
Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.Composite materials have attracted considerable attention in the defense industry owing to their distinctive properties and wide‐ranging applications. This systematic review examines the current research landscape and recent advancements in the application of composite materials for defense purposes.
Mikru Birhan +4 more
wiley +1 more source
Extending the operational range of Francis turbines: A case study of a 200 MW prototype
Energy Conversion and Management: XFrancis turbines are now widely used to support the integration of renewable and intermittent energy sources such as solar and wind power. Consequently, these turbines often operate away from their best efficiency point (BEP).
Michel J. Cervantes +4 more
doaj +1 more source
Increasing power output from Francis turbines: Effektøkning i vannkraftverk med Francis turbiner
, 2009 The main objective in this thesis was to investigate a potential increase of power output from the existing turbines at Ruacana Hydropower Station. This was restricted to only consider a runner replacement, and only technical aspects of a rehabilitation project has been evaluated.
openaire +2 more sources
Ecohydrology, Volume 18, Issue 8, December 2025.ABSTRACT Brown trout play an important role in the northeastern Atlantic aquatic ecosystems, moving between freshwater and marine environments to maximize fitness across their lives. The blenkje (aka finnock) is a life stage of migratory brown trout that returns to freshwater after its first summer migration to sea without maturing.
Robert J. Lennox +5 more
wiley +1 more source