Results 91 to 100 of about 118,670 (200)

Directional Variations in Tidal Flow Multifractality and Intermittency

Journal of Geophysical Research: Oceans, Volume 130, Issue 6, June 2025.
Abstract We explored distinct directional variations of multifractal and intermittent characteristics of ebb and flood flow velocities at nodule point, WA, tidal energy site, and complementary inspection on the East River, NY using scaling exponents of the structure function, distribution flatness, detrending moving average (DMA) analysis, multifractal
Shyuan Cheng, Vincent S. Neary, Leonardo P. Chamorro   +2 more
wiley   +1 more source

Numerical Assessment of Vertical Axis Hydrokinetic Turbine Efficiencies With Different Grate Protections

IET Renewable Power Generation, Volume 19, Issue 1, January/December 2025.
Hydrokinetic turbines are essential for sustainable power generation, but impacts can hinder their efficiency from sediment and debris. This study numerically evaluates the performance of Darrieus‐type vertical axis turbines with straight and Coanda‐type grates under varying design angles. The research uses ANSYS Fluent to highlight the turbines' power
Derya Karakaya, Sebnem Elçi
wiley   +1 more source

TRANSIENT MODELING OF A SMALL HYDROKINETIC TURBINE

Revista de Engenharia Térmica, 2015
In recent years, great attention has been given to the study of hydrokinetic turbines for power generation. Such importance is due to the use of clean energy technology by using renewable sources. Therefore, this work aims to present a relevant methodology for the efficient design of horizontal-axis hydrokinetic turbines with variable rotational speed.
J. R. P. Vaz, T. H. S. Moreira, D. T. Brandão, J. J. A. Lopes, S. W. O. Figueiredo, A. L. A. Mesquita, M. A. B. Galhardo, C. J. C. Blanco   +7 more
openaire   +2 more sources

Marine Fish Passage—Underappreciated Threats to Connectivity Within the Marine Environment

Marine Ecology, Volume 46, Issue 1, January 2025.
ABSTRACT Habitat fragmentation is a major threat to aquatic biodiversity loss. However, much of the focus is on the connectivity of freshwaters, with much less attention given to marine ecosystems. We contend that coastal infrastructure including bridges, causeways, tidal turbines, land infilling and harbours, wharfs, quays, piers and docks have ...
Robert J. Lennox, Kim Birnie‐Gauvin, Caitlin Bate, Steven J. Cooke, Tormod Haraldstad, Saron Berhe, Heather D. Penney, Charles W. Bangley, Knut Wiik Vollset, Morgan L. Piczak   +9 more
wiley   +1 more source

Hydrodynamic Performance Assessment of Straight and Helical Hydrokinetic Turbine Hydrofoil-Blade Sections in River Oyun, North-Central Nigeria

Mekanika
The performance of lift-based hydrokinetic rotor turbines usually depends on the blade sections or hydrofoil profile. Different hydrofoil blade sections, having different profiles and geometries, give different coefficients of performance in different ...
Laniyi Laniran Ladokun
doaj   +1 more source

Hydrokinetic turbines, an alternative for the transformation of the Agro-Industrial sector [PDF]

E3S Web of Conferences
This study focuses on the design optimization of hydrokinetic turbines for the agro-industrial sector, employing the Blade Element Momentum Theory (BEMT) methodology.
Cuenca Carlos A., Barzola Anthony S., Carriel Bristol E., Paredes Ruben J.   +3 more
doaj   +1 more source

Colour as a behavioural guide for fish near hydrokinetic turbines. [PDF]

Heliyon, 2023
Sonnino Sorisio G, Müller S, Wilson CAME, Ouro P, Cable J.   +4 more
europepmc   +1 more source

Fish response to the presence of hydrokinetic turbines as a sustainable energy solution. [PDF]

Sci Rep, 2023
Müller S, Muhawenimana V, Sonnino-Sorisio G, Wilson CAME, Cable J, Ouro P.   +5 more
europepmc   +1 more source

CFD Simulation of a Horizontal Axis Hydrokinetic Turbine

RE&PQJ
This study presents three-dimensional full transient numerical simulations of a horizontal axis hydrokinetic turbine, HAHT with particular emphasis on the analysis of its hydrodynamic characteristics. Hydrokinetic turbine performance is studied using a time-accurate Reynolds-averaged Navier Stokes (RANS) commercial solver.
López Castrillón, Yuri Ulianov, Laín Beatove, Santiago, Contreras, L. T.   +2 more
openaire   +2 more sources

Performance evaluation of coaxial horizontal axis hydrokinetic turbines system [PDF]

, 2014
Hydrokinetic energy technologies are emerging as a viable solution for renewable power generation. Unlike conventional hydropower turbines, hydrokinetic turbines are environmentally friendly; they operate at zero-head, and do not need dams to preserve ...
Abutunis, Abdulaziz M.
core   +1 more source