Role of Shape and Kinematics in the Hydrodynamics of a Fish-like Oscillating Hydrofoil
Journal of Marine Science and Engineering, 2023 In the present two-dimensional numerical study, we investigate the roles of geometrical parameters of a hydrofoil (shape/curvature of the leading and trailing edges and thickness) and kinematic parameters (phase difference between heave and pitch (ϕ)) on
Siddharth Gupta +4 more
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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
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Pressure Characteristics and Cavitation on an Oscillating Hydrofoil
Journal of the Society of Naval Architects of Japan, 1972 Unsteady cavitation that results from the non-uniformity of the flow field renders evil influences on marine propellers. It has been a general experiment for the investigation on such problems to observe unsteady cavitation in a flow field analogous to a wake pattern.
Miyata, Hideaki +2 more
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Observations of Oscillating Cavitation on a Flat Plate Hydrofoil.
JSME International Journal Series B, 1999 An experimental investigation was made to clarify the characteristics of oscillating cavitation on a flat plate hydrofoil in a water tunnel. Dynamic the behavior of oscillating cavitation is discussed from the unsteady pressure measurements at the upstream of the blade and the visual observations of cavitation phenomena using high-speed video ...
SATO, Kotaro +3 more
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Study of Underwater and Wave Gliders on the Basis of Simplified Mathematical Models
Applied Sciences, 2022 Both underwater and wave gliders are known as autonomous unmanned energy-saving vehicles which have recently found applications for monitoring the world ocean.
Kirill Rozhdestvensky
doaj +1 more source
An inertial mechanism behind dynamic station holding by fish swinging in a vortex street
Scientific Reports, 2022 Many aquatic and aerial animal species are known to utilise their surrounding flow field and/or the induced flow field of a neighbour to reduce their physical exertion, however, the mechanism by which such benefits are obtained has remained elusive.
Sam Tucker Harvey +4 more
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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
Fluid flow induced by oscillating bodies and flows in cyclones [PDF]
, 1991 In this thesis the following aspects have been investigated: (i) the numerical solutions for unsteady 2-dimensional, incompressible viscous fluid flows induced by a harmonically oscillating cascade, and (ii) the fluid flows in industrial cyclones and ...
Yan, Baoshe
core +7 more sources
Optimal Design and Numerical Simulation on Fish-Like Flexible Hydrofoil Propeller
Polish Maritime Research, 2016 Hydrofoil is widely used in underwater vehicle for the excellent hydrodynamic characteristics. Currently, researches are mostly about the rigid hydrofoil while the flexible hydrofoil, like the caudal fin, has not been studied adequately.
Xue Gang +6 more
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Comparing Models of Lateral Station-Keeping for Pitching Hydrofoils
Biomimetics, 2019 Fish must maneuver laterally to maintain their position in schools or near solid boundaries. Unsteady hydrodynamic models, such as the Theodorsen and Garrick models, predict forces on tethered oscillating hydrofoils aligned with the incoming flow.
Peter Gunnarson +2 more
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