Results 31 to 40 of about 5,184 (220)

Analysis of Geometric Parameter Characteristics of Oscillating Hydrofoils with Double Fowler Flaps

Actuators
In order to improve the energy extraction capability of oscillating hydrofoils, a dual-Fowler-flap structure is adopted as a device to increase lift.
Guang Sun, Mingshan Chi, Yang Yu, Bin Li, Haihua Lin   +4 more
doaj   +1 more source

Investigation of the effects of hydrofoil set-up on the performance of an international moth dinghy using a dynamic VPP

, 2008
The International Moth dinghy is a 3.355m long single handed, una-rigged monohull dinghy. The class rules allow the use of hydrofoil that in certain wind conditions can significantly reduce resistance.
Findlay, M.W., Turnock, S.R.
core   +2 more sources

SEAKEEPING PERFORMANCE OF A HYDROFOIL IN WAVES USING CFD APPROACH [PDF]

, 2021
Hydrofoil usually experiences high resistance and excessive vertical motions (heave and pitch) that may affect the passenger’s comfort due to the harsh environmental condition.
SYAFIQ ZIKRY, null FITRIADHY, ZIKRY, SYAFIQ, FITRIADHY   +3 more
core   +1 more source

Hydrodynamic Efficiency Analysis of a Flexible Hydrofoil Oscillating in a Moderate Reynolds Number Fluid Flow

Energies, 2021
The paper focuses on the study of a semi-activated system, based on a combination of two movements of forced pitching and free-heaving motion. Therefore, quantifying with accuracy the hydrodynamic forces applied on the hydrofoil seems to be crucial. This
Paul Brousseau, Mustapha Benaouicha, Sylvain Guillou   +2 more
doaj   +1 more source

Gas‐Phase Residence Time Distribution Characteristics in a Gas–Liquid Stirred Tank With Multiple Impellers

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Residence time distribution (RTD) is a standard tool for characterizing the hydrodynamic performance of stirred tanks. In this work, gas‐phase RTD was experimentally investigated in a gas–liquid stirred tank equipped with six multiple‐impeller configurations using four impeller types (WH, HEDT, CBY, and PDT). The effects of impeller speed, gas
Libo Wang, Jialu Zeng, Yuyun Bao, Ziqi Cai, Zhengming Gao, Xinyu Li   +5 more
wiley   +1 more source

Numerical Study on the Influence of Plasma Actuation on the Cavitation Characteristics of Hydrofoil [PDF]

Journal of Applied Fluid Mechanics
In order to investigate the influence of plasma actuation on cavitation in the flow field around a hydrofoil, the RNG k-ε turbulence model with density correction, the Schnerr–Sauer cavitation model, and the plasma phenomenological model were used to ...
R. Guo, L. Wang, R. Li, X. Zhang
doaj   +1 more source

Unlocking Hydrokinetic Energy in the Brazilian Amazon: A Statistical Resource Assessment and Economic Feasibility Analysis

Energy Science &Engineering, EarlyView.
This study develops a spatial and technical framework to evaluate hydrokinetic energy potential in the Amazon as a sustainable alternative to diesel‐based systems. By modeling regional resources, we demonstrate that hydrokinetic sources offer a cleaner, economically competitive solution for displacing fossil fuels in remote riverine communities ...
Ana Cláudia Pinto Ferraz, Ivan Felipe Silva dos Santos, Marina Batalini Macedo, Regina Mambeli Barros, Janayna Alves Romil dos Santos   +4 more
wiley   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

Investigating the Performance of Longitudinal Groove on Noise Reduction in a NACA0015 Hydrofoil Using Computational Fluid Dynamics

Mathematics
Nowadays, hydrodynamic noise reduction in hydrofoils is of great importance due to their wide applications in marine industries, submarines and water systems.
S. Suresh Kumar Raju, Nasser Firouzi, Fatemeh H. H. Al Mukahal, Przemysław Podulka   +3 more
doaj   +1 more source

The aesthetic sublime of megaproject structures: A framework and a research agenda

European Management Review, EarlyView.
Abstract The physical structures of megaprojects—such as mega‐canals, metros, railway lines, bridges, tunnels, and iconic opera houses—hold a profound capacity to generate aesthetic experiences with enduring societal impact. Yet, research on megaprojects has predominantly focused on functionality and economic rationale with aesthetics being pushed to ...
Federica De Molli, Alfons van Marrewijk, Arne Carlsen   +2 more
wiley   +1 more source