Results 31 to 40 of about 123 (120)
Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 5, May 2025.Abstract Reservoir construction can alter the transport and export of nutrients and organic matter by rivers to coastal areas. However, influences from construction within the first years after flooding are not well understood. Here we present a 9‐year study of La Romaine Hydroelectric Complex, composed of four cascading boreal reservoirs sequentially ...
Bianca M. Rodríguez‐Cardona +4 more
wiley +1 more source
Concept of Energy Extraction from Sea Waves Using Flapping Foils Operating as Biomimetic System
International Journal of Coastal and Offshore Engineering, 2016 Oscillating hydrofoils in presence of waves under the free surface as new systems for energy extraction is a hybrid renewable marine energy sources.
Ali Zinati, Mohammad Javad Ketabdari
doaj
Geological Journal, Volume 60, Issue 2, Page 404-430, February 2025.Present study explains the current understanding about the complex evolution of the CITZ. New zircon geochronological data from Mahakoshal Basin is used to document the pre‐suture history of the southern margin of Bundelkhand Craton where Mahakoshal Basin developed as a back‐arc basin and remained open even after 1700 Ma.
A. Sharma +3 more
wiley +1 more source
Wind Turbine Optimization by Blade Element Momentum Method and Particle Swarm Optimization Technique
Journal of Engineering, Volume 2025, Issue 1, 2025.The aerodynamic efficiency of wind turbines is greatly influenced by the shape of their airfoils. In this study, four airfoils were optimized to enhance the performance of a small horizontal axis wind turbine. The optimization process involved adjusting the thickness and camber of the airfoils using the blade element momentum method and particle swarm ...
Hossein Seifi Davari +4 more
wiley +1 more source
Energy Reports, 2022 The energy contained in the tidal motion of the seas and oceans has the potential to be a significant source ofrenewable energy. The oscillating hydrofoil current-energy turbine has a good performance to extract energyfrom the coupling of its heaving and pitching motions.
Weijie Mo +7 more
openaire +2 more sources
Experimental Parameters Influencing the Cavitation Noise of an Oscillating NACA0015 Hydrofoil
Journal of Marine Science and Engineering, 2023 The strong increase in anthropogenic underwater noise has caused a growing intention to design quieter ships given that ship propellers are one of the dominating noise sources along the worldwide shipping routes. This creates an imminent demand for deeper knowledge on the noise generation mechanisms of propeller cavitation.
Föhring, Leonie S. +2 more
openaire +3 more sources
Energy Science &Engineering, Volume 12, Issue 10, Page 4394-4413, October 2024.This study develops a method of identifying vortices in the impeller channel of the multiphase pump, and reveals the intrinsic connection between the vortices and pressure fluctuations in the main flow passage. These findings offer some suggestions for eliminating the influence of vortices and enhancing the pressurizing capabilities of multiphase pumps.
Guangtai Shi +4 more
wiley +1 more source
A Soft Robotic Morphing Wing for Unmanned Underwater Vehicles
Advanced Intelligent Systems, Volume 6, Issue 6, June 2024.This study presents the design and hydrodynamic characterization of a soft wing for implementation on underwater gliders. Through hydraulic actuation, the soft wing deforms and adjusts its lift‐to‐drag ratio, which ranges from −70% to +10% with respect to a rigid wing.
Andrea Giordano +12 more
wiley +1 more source
Computational Study of Oscillating Hydrofoil with Different Plunging/Pitching Frequency
Journal of Aero Aqua Bio-mechanisms, 2010 A numerical investigation of an oscillating hydrofoil with unequal plunging/pitching frequency is conducted by solving unsteady Navier-Stokes equations. Studies are performed for the impact of different frequency ratio on the wake structure and propulsion parameters over a wide range of plunging amplitude, pitching amplitude and oscillating reduced ...
Qing Xiao, Wei Liao
openaire +2 more sources
Undulatory Propulsion at Milliscale on Water Surface
Advanced Science, Volume 11, Issue 19, May 22, 2024.The water‐surface propulsion of an undulatory swimmer stems from the complex interplay of various forces that are generated by the body's waveform and the waves at the water‐air interface. Adjusting the material and dimensions of the body, along with the excitation manner of the head, allows for tuning of the swimmer's waveform that is crucial for ...
Ziyu Ren +3 more
wiley +1 more source