Abstract
The objective of our study was to investigate the effect of caudal fin behavior resulting from the caudal skeletal structure of tuna on the propulsive performance. In this paper, the caudal skeletal structure and mechanical properties on the caudal fin of bluefin tuna (Thunnus thynnus) were examined. The Young’s modulus of fin rays composing the caudal fin was obtained. A two dimensional oscillating wing theory was applied to the caudal fin sinusoidally oscillating in a uniform flow. Then the pressure distribution over the fin was calculated and the fin deformation was obtained. It was found that a phase delay existed between the leading edge and the middle part of the fin.
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References
Bisplinghoff R, Ashley H, Halfman R (1957) Aeroelasticity. Adison-Wesley, 251–281
Chopra M and Kambe T (1977) Hydrodynamics of lunate-tail propulsion. Part 2, J. Fluid Mech, Vol 79, 49–69
Gibb AC, Dickson KA, and Lauder GV (1999) Tail kinematics of the chub mackerel Scomber japonicus: testing the homocercal tail model of fish propulsion, J. Exp. Biol. 202, 2433–2447
Lighthill MJ (1975) Mathematical Biofluiddynamics, Soc.for Industrial and Applied Mathematics
Morikawa H, Nakao S, and Kobayashi S (2001) Experimental study on oscillating wing for propulsor with bending mechanism modeled on caudal muscleskeletal structure of tuna, JSME Int J, Series C, Vol 44, No 4, 1117–1124
Morikawa H, Yusa K and Kobayashi S (2004) Mechanical characteristics of caudal fin resulting from caudal muscle-skeletal structure of bluefin tuna, Proc 14th Int Offshore and Polar Engineering Conference, Toulon, France, 280–283
Nakashima, M, Takahashi, Y, Ono, N, and Tubaki, T (2003) Three-dimensional maneuverability of a dolphin robot (Roll control and loop-the-loop motion), Proc 2nd Int Symp on Aqua Bio-Mechanisms, Honolulu
Triantafyllou, MS and Triantafyllou, GS (1995) An efficient swimming machine, Scientific American, Vol 272, No 3, 64–70
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Morikawa, H., Yusa, K., Kobayashi, S. (2008). Mechanical Properties of the Caudal Fin Resulting from the Caudal Skeletal Structure of the Bluefin Tuna. In: Kato, N., Kamimura, S. (eds) Bio-mechanisms of Swimming and Flying. Springer, Tokyo. https://doi.org/10.1007/978-4-431-73380-5_6
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DOI: https://doi.org/10.1007/978-4-431-73380-5_6
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-73379-9
Online ISBN: 978-4-431-73380-5
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