Undulatory Propulsion at Milliscale on Water Surface [PDF]
Advanced ScienceThe oscillatory pitch motion at the leading edge of a millimeter‐scale flexible sheet on the water surface can generate undulatory locomotion for swimming, similar to a honeybee vibrating its wings for propulsion.
Ziyu Ren +3 more
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Contrasting Flexible and Rigid Bioinspired Flapping Hydrofoils for Suspended Particles Discharge in Raceway Aquaculture [PDF]
BiomimeticsTo investigate the impact of flexible versus rigid bioinspired flapping hydrofoils on the discharge characteristics of suspended particles in raceway aquaculture, this study established a two-way fluid–structure coupling model of a flapping hydrofoil ...
Fangwei Xu, Ertian Hua, Mingwang Xiang
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Hydrodynamic stress maps on the surface of a flexible fin-like foil. [PDF]
PLoS ONE, 2021 We determine the time dependence of pressure and shear stress distributions on the surface of a pitching and deforming hydrofoil from measurements of the three dimensional flow field.
Paule Dagenais, Christof M Aegerter
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Optimal Design and Numerical Simulation on Fish-Like Flexible Hydrofoil Propeller [PDF]
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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Biomimetic Hydrofoil Propulsion: Harnessing the Propulsive Capabilities of Sea Turtles and Penguins for Robotics [PDF]
BiomimeticsThis review synthesizes current research on hydrofoil-propelled robots inspired by the swimming mechanisms of sea turtles and penguins. It begins by summarizing the swimming kinematics of these organisms, highlighting their superior aquatic performance ...
Yayi Shen +5 more
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Influence of spanwise flexibility on steady and dynamic responses of airfoils vs hydrofoils. [PDF]
Phys Fluids (1994), 2021 There is growing interest in using lighter and more flexible foils with active and/or passive smart actuation mechanisms to increase efficiency and maneuverability. For efficient operations, airfoils and hydrofoils tend to have an effective aspect ratio greater than two, which permits spanwise flexibility depending on the choice of material and ...
Chae EJ, Young YL.
europepmc +3 more sources
Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method [PDF]
Applied Bionics and Biomechanics, 2016 The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations ...
Gang Xue +3 more
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Numerical investigation of cavity dynamics and cavitation-induced vibrations of a flexible hydrofoil [PDF]
International Journal of Fluid EngineeringThis work investigates the cavitation and fluid–structure interaction characteristics of a flexible NACA0015 hydrofoil. The simulation incorporates the Zwart–Gerber–Belamri cavitation model and two-way fluid–structure interactions.
Bin Xu +7 more
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EFFECTS OF TWO TYPES OF CONTROLLABLE DEFORMATION ON ENERGY EXTRACTION OF A FLEXIBLE HYDROFOIL
Brodogradnja, 2022 Energy extraction capacity of controllably flexible hydrofoil was studied under two identified deformation modes. Deformation modes, flexure parameters (flexure amplitude and flexure coefficient ) and motion parameters (reduced frequency f* and ...
Yubing Zhang +4 more
doaj +1 more source
Cavity induced vibration of flexible hydrofoils [PDF]
Journal of Fluids and Structures, 2014 The objective of this work is to investigate the influence of cavity-induced vibrations on the dynamic response and stability of a NACA66 hydrofoil at 8° angle of attack at Re=750 000 via combined experimental measurements and numerical simulations. The rectangular, cantilevered hydrofoil is assumed to be rigid in the chordwise direction, while the ...
Akcabay, Deniz Tolga +4 more
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