2022 Fiscal Year Final Research Report
Research on self-propelling and jumping aquatic animals near water surface by deformation considering muscle force
| Project/Area Number |
17K06148
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Yokohama National University |
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Principal Investigator |
Shirazaki Minoru 横浜国立大学, 大学院環境情報研究院, 准教授 (50302584)
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| Project Period (FY) |
2017-04-01 – 2023-03-31
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| Keywords | 計算流体力学 / 固気液3相流れ / 自由界面 / 生物流体 / 魚の遊泳 |
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| Outline of Final Research Achievements |
Although fish swimming is a common phenomenon, many details remain unknown. Some fish swim with jumping near the water surface, but the reason for this is not always clear. Computational fluid dynamics (CFD) analysis showed that, considering propulsive efficiency including energy consumption, swimming with jumping may be more advantageous than horizontal swimming for fish with large body lengths. The results of other analyses using fish models that considered the fish backbone and muscle force showed that differences in the timing of large deformations and the distribution of muscle force have a significant effect on fish swimming.
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| Free Research Field |
計算流体力学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の成果は，現実の魚の遊泳挙動の把握の他に，魚型ロボットの水面付近での効率的な遊泳，制御につながる可能性がある．特に，浅水領域において効率的で精密な遊泳や急旋回が可能な，スクリュー推進に対する優位性を持つ魚型ロボット開発への寄与が考えられる．
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