The Laws of Waterfowl Motion and Their Use in the Movement of Underwater Objects

In terms of an ideal incompressible fluid, the flow of a thin wing of finite span, which simulates the work of a dolphin’s tail fin, is considered. The motion of a dolphin performing periodic oscillations perpendicular to the direction of the main motion with its tail fin with an almost uniform and...

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Bibliographic Details
Published in:Oceanology (Washington. 1965) 2022-10, Vol.62 (5), p.611-619
Main Authors: Korchagin, N. N., Sidnyaev, N. I., Fedotov, A. A.
Format: Article
Language:English
Subjects:
Aquatic mammals
Dolphins
Earth and Environmental Science
Earth Sciences
Fins
Fluid flow
Incompressible flow
Incompressible fluids
Kinematics
Marine mammals
Marine Physics
Movement
Oceanography
Oscillations
Swirling
Tails
Thrust
Waterfowl
Wings
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Summary:In terms of an ideal incompressible fluid, the flow of a thin wing of finite span, which simulates the work of a dolphin’s tail fin, is considered. The motion of a dolphin performing periodic oscillations perpendicular to the direction of the main motion with its tail fin with an almost uniform and rectilinear motion of the center of mass is studied. The flow around an oscillating wing operating in the mode of creating a thrust force with the formation of a swirling trace behind the wing is studied. The model parameters are selected according to the data of the experimental observations. A numerical solution of the problem is obtained with calculations of the kinematic and power characteristics of the dolphin tail fin model.
ISSN:0001-4370
1531-8508
DOI:10.1134/S0001437022050083