Two-Dimensional Self-Propelled Fish Motion in Medium: An Integrated Method for Deforming Body Dynamics and Unsteady Fluid Dynamics

Yang, Yan; Wu, Guanhao; Yu, Yinye; Tong, Bing‐Gang

doi:10.1088/0256-307x/25/2/066

Cited by 25 publications

(32 citation statements)

References 12 publications

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“…We have recently derived the dynamical equations of a deforming body and developed an integrated method with the two groups of governing equations involved (24). The key of the dynamical equations of a deforming body is to introduce a centre-of-mass (c.m.)…”

Section: Deforming Body Dynamicsmentioning

confidence: 99%

“…Our 2-D numerical platform provides an integrated CFD method to study the nature of the free self-propelled fish motion. More details on the derivation on the above equations and the integrated method can be found in (24). …”

Section: Deforming Body Dynamicsmentioning

confidence: 99%

“…Verification on grid dependency and influence of time step were given with the case of a cruising saithe (24) . The grid size of 206×81 (Fig 2a) and the nondimensionalized time step of 0.5×10 -4 (Fig 2b) can achieve reasonably accurate solution.…”

Section: Verification and Validationmentioning

confidence: 99%

“…The CFD-based platform has been validated by simulating a self-propelled cruising saithe (24) , where the fluid force is evaluated credible. More validations can be achieved through the body kinematics results, compared with the corresponding experiments, as will be shown in Section 3.…”

Section: Verification and Validationmentioning

confidence: 99%

“…In this paper, single-beat turns and cruising turns, two basic modes of the routine turns of Koi carp (Cyprinus carpio koi), are numerically investigated with our 2-D CFD platform for fish maneuver biomechanics (24) , to explore their flow physics and control mechanisms.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Flow Physics of Routine Turns of Koi Carp(Cyprinus Carpio Koi)

Yang

et al. 2009

JBSE

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This paper investigates the flow physics of Koi carp's routine turns with a novel CFD method solving the body-fluid interaction problem, which consists of deforming body dynamics and unsteady fluid dynamics. Firstly, the dynamical equations of the deforming body are presented. Secondly, the coupled equations of body dynamics and fluid dynamics are solved together. The numerical simulation is based on the kinematics data from a video tracking measurement system and the predicted body kinematics and flow visualization are well agreed with the experimental results. Single-beat turn and cruising turn are the basic two turning modes of Koi carp, and the former is the mostly observed. Through comparative studies of the turning maneuverability performance and energetics of these two kinds of turns, their common flow control mechanisms and different features are discovered, such as (1) agility (defined as turning rate) is correlated positively with maneuverability (defined as the reciprocal of the turning radius), (2) the total power appears good linear relation with the turning rate, and (3) single-beat turns are more efficient than cruising turns.

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Section: Deforming Body Dynamicsmentioning

confidence: 99%

Section: Deforming Body Dynamicsmentioning

confidence: 99%

Section: Verification and Validationmentioning

confidence: 99%

Section: Verification and Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Flow Physics of Routine Turns of Koi Carp(Cyprinus Carpio Koi)

Yang

et al. 2009

JBSE

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Magnetically Propelled Fish‐Like Nanoswimmers

Zhang

et al. 2016

Small

226

160

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The swimming locomotion of fish involves a complex interplay between a deformable body and induced flow in the surrounding fluid. While innovative robotic devices, inspired by physicomechanical designs evolved in fish, have been created for underwater propulsion of large swimmers, scaling such powerful locomotion into micro-/nanoscale propulsion remains challenging. Here, a magnetically propelled fish-like artificial nanoswimmer is demonstrated that emulates the body and caudal fin propulsion swimming mechanism displayed by fish. To mimic the deformable fish body for periodic shape changes, template-electrosynthesized multisegment nanowire swimmers are used to construct the artificial nanofishes (diameter 200 nm; length 4.8 μm). The resulting nanofish consists a gold segment as the head, two nickel segments as the body, and one gold segment as the caudal fin, with three flexible porous silver hinges linking each segment. Under an oscillating magnetic field, the propulsive nickel elements bend the body and caudal fin periodically to generate travelling-wave motions with speeds exceeding 30 μm s . The propulsion dynamics is studied theoretically using the immersed boundary method. Such body-deformable nanofishes exhibit a high swimming efficiency and can serve as promising biomimetic nanorobotic devices for nanoscale biomedical applications.

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Aquatic Locomotion for Self-propelled Fishlike Bodies and Different Styles of Swimming

Graziani

Piva²

2022

50+ Years of AIMETA

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Two-Dimensional Self-Propelled Fish Motion in Medium: An Integrated Method for Deforming Body Dynamics and Unsteady Fluid Dynamics

Cited by 25 publications

References 12 publications

Flow Physics of Routine Turns of Koi Carp(Cyprinus Carpio Koi)

Flow Physics of Routine Turns of Koi Carp(Cyprinus Carpio Koi)

Magnetically Propelled Fish‐Like Nanoswimmers

Aquatic Locomotion for Self-propelled Fishlike Bodies and Different Styles of Swimming

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