School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
Bioinspir Biomim. 2024 Nov 27;20(1). doi: 10.1088/1748-3190/ad936f.
When designing the internals of robotic fish, variations in the internal arrangements of power and control systems cause differences in external morphological structures, particularly the positions of maximum thickness. These differences considerably affect swimming performance. This study examines the impact of the topological structure of self-propelled fish-like swimmers on hydrodynamic performance using fluid-structure interaction techniques. Fish-like swimmers with maximum thickness closest to the head exhibit optimal swimming performance, characterized by modest energy consumption for fast-response acceleration during the starting phase and higher swimming velocity for high-speed travel during steady swimming. As the maximum thickness moves toward the middle, acceleration performance significantly weakens and swimming speed decreases, although maximum energy consumption is relatively reduced. This study will provide a notable reference for the morphological design of underwater robotic fish.
在设计机器鱼的内部结构时，动力和控制系统的内部布置的变化会导致外部形态结构的差异，特别是最大厚度的位置。这些差异会极大地影响游泳性能。本研究使用流固耦合技术研究了自推进仿鱼游泳体的拓扑结构对水动力性能的影响。最大厚度最接近头部的仿鱼游泳体具有最佳的游泳性能，其特点是在启动阶段快速响应加速时能耗适中，在稳定游泳时高速移动时游泳速度较高。随着最大厚度向中间移动，加速性能显著减弱，游泳速度降低，尽管最大能量消耗相对减少。本研究将为水下机器鱼的形态设计提供重要参考。
