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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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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