Results 51 to 60 of about 79,399 (174)

Experimental Apparatus for the Study of Oscillating Hydrofoil Energy Generation

, 2021
Current riverine-based hydropower is expensive and damaging to the local ecosystem. Oscillating hydrofoil turbines, however, are estimated to be much cheaper and offer a lower impact on the local ecosystem.

core  

Untangling sedimentation processes in a deep fjord lake in Labrador: A high‐resolution archive of past environment dynamics at Grand Lake

The Depositional Record, Volume 11, Issue 5, Page 1259-1284, November 2025.
Sedimentological and geochemical characteristics are used to reconstruct sedimentation dynamics and erosional processes. Several rapidly deposited layers are characterised over changing depositional environments during the Late Holocene, from a phase when the lake was connected to the sea to a more stable state conducive to varve formation.
Milena S. Kury, Pierre Francus, Léo Chassiot, Dermot Antoniades, Guillaume St‐Onge, Juliette Girard, Patrick Lajeunesse   +6 more
wiley   +1 more source

Flow Memory Effect on Open‐Frame Remotely Operated Vehicle Motion

Journal of Field Robotics, Volume 42, Issue 6, Page 2611-2638, September 2025.
ABSTRACT The flow memory effect is a kind of viscous force caused by acceleration between continuous phases and underwater vehicles and the development of the boundary layer near the interfacial surface. This paper establishes a 6‐degrees‐of‐freedom unsteady equation of motion describing the flow memory effect on viscous hydrodynamic loads.
Ruinan Guo, Yingfei Zan, Wenzhi Fu, Chenlei Cao, Duanfeng Han, Nan Sun   +5 more
wiley   +1 more source

Study on the Influence of Chord Length and Frequency of Hydrofoil Device on the Discharge Characteristics of Floating Matter in Raceway Aquaculture

Journal of Marine Science and Engineering
To investigate the influence of the chord length and frequency of an oscillating hydrofoil device on the discharge characteristics of floating particulate matter, in this study, we take raceway aquaculture as an example and systematically compare and ...
Ertian Hua, Tao Wang, Mingwang Xiang, Caiju Lu, Yabo Song, Qizong Sun   +5 more
doaj   +1 more source

Research on swimming hydrodynamics based on a three‐dimensional high‐precision fish model

River, Volume 4, Issue 3, Page 341-350, August 2025.
Abstract Fish swimming hydrodynamics serves as a critical foundation for aquatic ecological conservation, with recent research extending from 2D to 3D perspectives. This study employs 3D high‐fidelity modeling with dynamic mesh technology to investigate how cylindrical obstacles at varying positions affect Carassius auratus locomotion. Analysis of nine
Lin Sun, Ruidong An, Jia Li, Wei Jiang, Diji Zhang   +4 more
wiley   +1 more source

An Experimental Investigation Assessing the Validity of Quasi-Static Calculations for an Oscillating Hydrofoil

, 2011
Inspired by animals, flapping wing propulsion has been of interest since the early 1900s. Flapping hydrofoil propulsion has been attempted by designers of human powered watercraft because of the novelty and the apparent high theoretical efficiency, but ...
Keith Alexander, Rajan Fernandez
core   +1 more source

Backward swimming in elongated‐bodied abyssal demersal fishes: Synaphobranchidae, Macrouridae, and Ophidiidae

Journal of Fish Biology, Volume 107, Issue 1, Page 52-62, July 2025.
Abstract The deep‐sea demersal fish fauna is characterized by a prevalence of elongated‐body forms with long tapering tails. Using baited camera landers at depths of 4500–6300 m in the Pacific Ocean, we observed multiple instances of backward swimming using reverse undulation of the slender body in four species: the cutthroat eel Ilyophis robinsae ...
Imants G. Priede, Alan J. Jamieson
wiley   +1 more source

Lacustrine and fan‐delta sediments in syn‐rift lake basins

The Depositional Record, Volume 11, Issue 3, Page 857-892, June 2025.
A consistent model for the sequence framework and depositional pattern of asymmetric half‐grabens in syn‐rift lake basins bounded by active faults has been established, complementing existing models for marine rift successions. Syn‐rift lake basins are characterised by relatively small dimensions, steep slopes, poorly developed shoreline strata ...
Qianyou Wang, Yaohua Li, Hamed Sanei, Joe Gardner, Arka Rudra, James E. P. Utley, Richard H. Worden   +6 more
wiley   +1 more source

Multi‐Year Nutrient and Organic Carbon Mass Balance of a Young Boreal Hydroelectric Reservoir Complex

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, Pascal Bodmer, François Bilodeau, Alain Tremblay, Paul A. del Giorgio   +4 more
wiley   +1 more source

A hybrid breakwater–wave energy converter based on a passive oscillating hydrofoil: numerical assessment of wave attenuation and energy capture

Results in Engineering
Floating breakwaters are widely used for coastal protection, yet their ability to harness incident wave energy remains limited. To address this limitation, the present study proposes a novel hybrid floating breakwater integrated with a passive ...
Mohammad Aref Ghassemi, Alireza Abbasi, Hassan Ghassemi, Antonio Carlos Fernandes, Guanghua He, Joel Sena Sales Junior   +5 more
doaj   +1 more source