Biomimetic Hydrofoil Propulsion: Harnessing the Propulsive Capabilities of Sea Turtles and Penguins for Robotics

Biomimetics, Год журнала: 2025, Номер 10(5), С. 272 - 272

Опубликована: Апрель 28, 2025

This review synthesizes current research on hydrofoil-propelled robots inspired by the swimming mechanisms of sea turtles and penguins. It begins summarizing kinematics these organisms, highlighting their superior aquatic performance as primary motivation for biomimetic design. Next, established analytical methods characterizing hydrofoil locomotion patterns are presented, along with a clear delineation decoupled motion components exhibited turtle flippers penguin wings. Such decoupling provides systematic framework guiding design driving mechanisms. Building this biomechanical foundation, critically examines recent advances in flexible hydrofoils that enhance propulsion efficiency through three synergistic to thrust generation, while identifying key challenges material durability non-linear fluid-structure interactions. The then surveys existing actuation systems, which commonly reproduce coupled motions multiple degrees freedom (DOFs). Finally, representative examined: turtle-inspired forelimbs typically incorporate DOFs, whereas penguin-inspired wings usually offer two DOFs. By aligning robotic designs source offers critical insights advance development systems enhanced performance.

Язык: Английский

Effect of solid particle size on cavitation around hydrofoil

Physics of Fluids, Год журнала: 2024, Номер 36(11)

Опубликована: Ноя. 1, 2024

Pumps and turbines are widely used in marine engineering, hydrofoil cavitation, a fundamental form of pump turbine is often as simplified hydraulic model to study cavitation issues. However, oceans lakes contain many particulate impurities that can exacerbate the instability flow field around hydrofoils. Currently, there few studies on solid particle-induced To investigate influence small particles blade National Advisory Committee for Aeronautics 0006 was model. Using large eddy simulation-volume fluid method discrete phase model, three-dimensional analyzed nine different particle sizes at 3% concentration compared clean water. The results show cannot penetrate bubble film but move along surface cavity, slightly increasing vortex turbulence intensity within field, thereby promoting development reducing hydrofoil's hydrodynamic performance. As size increases, overall effect number becomes stronger, while reduction leads reduced impact field.

Язык: Английский

Investigation of condensation-induced interfacial instability and heat transfer characteristics of two-hole submerged jet flow under subcooled inflow

International Communications in Heat and Mass Transfer, Год журнала: 2024, Номер 161, С. 108556 - 108556

Опубликована: Дек. 31, 2024

Язык: Английский