Results 11 to 20 of about 5,184 (220)
Analysis of Bulb Turbine Hydrofoil Cavitation [PDF]
Applied Sciences, 2021 The influence of a bulb runner blade hydrofoil shape on flow characteristics around the blade was studied. Experimental work was performed on a bulb turbine measuring station and a single hydrofoil in a cavitating tunnel.
Andrej Podnar +3 more
doaj +2 more sources
Negative lift generation in a tidal device structure [PDF]
, 2009 Becoming aware of the impact of global warming, all countries of the European Union have agreed to produce 20% of their electricity from renewable energy by 2020.
Thilleul, Olivia
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Effect of the laminar separation bubble induced transition on the hydrodynamic performance of a hydrofoil [PDF]
, 2014 The authors thank the technical staff of IRENav for their contribution to the experimental set up.The present study deals with the effect of the laminar separation bubble (LSB) induced transition on the lift, drag and moment coefficients of a hydrofoil ...
DELAFIN, Pierre Luc +4 more
core +1 more source
Propulsion performance analysis of hydrofoil on a wave-powered boat
Zhongguo Jianchuan Yanjiu, 2020 Objectives This study is focused on the influence of the hydrodynamic performance of hydrofoils on the propulsion of wave-powered boats. The hydrofoil rotation around the center of the wave-powered boat and the passive rotation around the center of the ...
DENG Chao +3 more
doaj +1 more source
Hydrofoils and Hydrofoil Craft [PDF]
Annual Review of Fluid Mechanics, 1973 At the present time several hundred hydrofoilcraft are in service throughout the world. The upsurge in the use of these craft did not really begin until the late 1950s, although fascination with the idea of supporting small boats with underwater wings dates well back into the nineteenth century.
openaire +2 more sources
An experimental study of boundary-layer transition induced vibrations on a hydrofoil [PDF]
, 2010 This paper aims at characterizing experimentally laminar to turbulent transition induced vibrations. Here, the transition is known to be triggered by a Laminar Separation Bubble that results from a laminar separation of the boundary-layer flow on a ...
Jacques Andre´ Astolfi +6 more
core +1 more source
Numerical Simulation on Vortex Shedding from a Hydrofoil in Steady Flow
Journal of Marine Science and Engineering, 2020 This paper presents a numerical modeling procedure for the idealization of vortex shedding effects in the wake flow field of a NACA0009 hydrofoil. During the simulation, the lift and drag acting on the hydrofoil were monitored, and the vortex-shedding ...
Jian Hu +5 more
doaj +1 more source
On the singing of hydrofoils [PDF]
The Journal of the Acoustical Society of America, 1976 Flexural vibrations of hydrofoils can be caused by the formation of vortices at their trailing edges. These vortices are formed at a predominant frequency which depends on the water velocity and a characteristic transverse wake dimension. When the shedding frequency corresponds to a flexural resonance frequency of the hydrofoil the severe vibrations ...
W. K. Blake, L. J. Maga, G. Finkelstein
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Hydrodynamic Characteristics Analysis of Amphibious HydrofoilVehicle Based on LBM-LES Method
Hangkong gongcheng jinzhan, 2019 At present, research on the aerodynamics and hydrodynamic characteristics of a amphibious hydrofoil vehicle at home and abroad is still at exploration and development stage.
Feng Huanhuan +3 more
doaj +1 more source
An experimental analysis of fluid structure interaction on a flexible hydrofoil in various flow regimes including cavitating flow [PDF]
, 2012 The authors gratefully acknowledge the technical staff of IRENav for its contribution to the experimental set up.The structural response of a rectangular cantilevered flexible hydrofoil submitted to various flow regimes is analyzed through an original ...
SIGRIST, Jean-François +2 more
core +1 more source