Results 71 to 80 of about 3,877 (226)

Thrust generation and wake structure of wiggling hydrofoil

, 2010
Marine animals and micro-machines often use wiggling motion to generate thrust. The wiggling motion can be modeled by a progressive wave where its wavelength describes the flexibility of wiggling animals. In the present study, an immersed boundary method
He GY, Zhang X(张星), 张星, Zhang SG
core   +1 more source

Repellence Effect of the New Sound for Underwater Speaker of Hydrofoil [PDF]

TransNav, 2015
In order to prevent hydrofoil colliding with cetaceans, the underwater speaker (UWS) has been installed to repel cetaceans. Yamada et al. (2012) analyzed and devised the UWS sound as it fits the cetaceans' acoustic properties to prevent the collision ...
Tatsunori Nakashima, Nozomi Kobayashi, Hiroko Yamada, T. Katsumata, R. Yoshida, Hidehiro Kato, H. Okabe, I. Kawazu, Y. Yanase, M. Omine, Minoru Terada, Hiroko Sugioka, Masanori Kyo   +12 more
doaj   +1 more source

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

Unsteady Cavitation Flow Characteristics Around the Clark-Y Hydrofoil Cascade

Journal of Marine Science and Engineering
Both experimental and numerical studies were conducted to obtain the influence laws of complex cavitation flow structures around a Clark-Y hydrofoil cascade.
Wenchun Bao, Yichen Zhu, Yule Ding, Mindi Zhang, Fu Chen   +4 more
doaj   +1 more source

Co‐Precipitation of Ni‐Rich Me(OH)2 Precursors for High Performance LiNixMnyCo1‐x‐yO2 Cathodes: A Review

ENERGY &ENVIRONMENTAL MATERIALS, Volume 8, Issue 6, November 2025.
This review addresses the nucleation mechanism and the thermodynamic and kinetic reaction processes of co‐precipitation. The comprehensive effects of key parameters on precursor physicochemical properties are also systematically interpreted. Notably, precursor characterization and physicochemical properties, including impurity levels and tolerance ...
Jun Wang, Budiman Batara, Kaihua Xu, Kun Zhang, Wenchao Hua, Yaguang Peng, Wenze Liu, Anisa Helena Isma Putri, Yuhui Xu, Xueliang Sun, Xifei Li   +10 more
wiley   +1 more source

Unsteady Hydrofoil Theory

Journal of Zosen Kiokai, 1962
Present paper is aimed to predict theoretically the lift, moment and energy of wake vortex on the submerged hydrofoil moving close to the free surface under waves.Satisfying the boundary condition on the free surface, velocity potential is obtained for the bound and free vortex, from which the induced velocity field can be determined. From the boundary
  +9 more sources

Stad Slide: Preconditioning and failure of one of the world's largest megaslides

Journal of Quaternary Science, Volume 40, Issue 8, Page 1392-1406, November 2025.
ABSTRACT Submarine landslides can generate tsunamis and pose risks to underwater infrastructure, but a lack of direct observations of such slides hinders our understanding of their development and hazard potential. Studying the morphology of past slides can offer insights into their preconditioning and failure.
B. K. Tiller, C. L. Batchelor, B. Bellwald, B. Manton, K. Winter, N. Ross, S. Planke   +6 more
wiley   +1 more source

Effect of Axial Agitator Configuration (Up-Pumping, Down-Pumping, Reverse Rotation) on Flow Patterns Generated in Stirred Vessels [PDF]

, 2001
Single phase turbulent flow in a tank stirred with two different axial impellers - a pitched blade turbine (PBT) and a Mixel TT (MTT)- has been studied using Laser Doppler Velocimetry. The effect of the agitator configuration, i.e.
Fletcher, David F., Mavros, Paul, Aubin, Joelle, Xuereb, Catherine, Bertrand, Joël   +4 more
core   +1 more source

Misplaced fears? What the evidence reveals of the ecological effects of tidal power generation

Ecological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
Marine energy (tidal range and stream/flow) is a dependable and clean power source that stands out as a compelling alternative to fossil fuels. Despite widespread concerns surrounding the ecological effects of tidal energy infrastructure, we find few of these are substantiated by evidence or long‐term monitoring of existing tidal power projects.
Sylvia E. Ascher, Iris M. Gray, C. M. (Tilly) Collins   +2 more
wiley   +1 more source

Numerical simulation of hydrodynamic performance of hydrofoil with inner groove

Zhongguo Jianchuan Yanjiu, 2020
[Objectives] Underwater hydrofoils have the characteristics of drag reduction and energy conservation. They are often used in the design of rudder and fin stabilizers for high-performance ships.
XIE Xuesen, CHANG Shengmin, WANG Chao, GUO Chunyu   +3 more
doaj   +1 more source