Results 1 to 10 of about 176 (129)
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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Applied Ocean ResearchThe flexible hydrofoil represents a promising tidal energy harvesting device, known for its environmentally friendly attributes. Understanding the intricacies of its energy harvesting mechanism and analyzing the impacts of key parameters are essential ...
Yuzhi Yao +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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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
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 +2 more
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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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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
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Flexible hydrofoil optimization for the 35th America's Cup with constrained EGO method [PDF]
Ocean Engineering, 2018 This paper investigates the use of constrained surrogate models to solve the multi-design optimization problem of a flexible hy-drofoil. The surrogate-based optimization (EGO) substitutes the complex objective function of the problem by an easily evaluable model, constructed from a limited number of computations at carefully selected design points ...
Frédéric Hauville +2 more
exaly +5 more sources