Locomotion with flexible propulsors: I. Experimental analysis of pectoral fin swimming in sunfish
Locomotion with flexible propulsors: I. Experimental analysis of pectoral fin swimming in sunfish
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DOI：
10.1088/1748-3182/1/4/s04
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发表时间：
2006-12-01
影响因子：
3.4
通讯作者：
Bozkurttas, Meliha
中科院分区：
文献类型：
--
作者：
Lauder, George V.;Madden, Peter G. A.;Bozkurttas, Meliha
通过将（1）推进器运动的三维运动学、（2）推进器的材料特性、（3）功率输入和控制以及（4）推进器运动的流体动力学效应的描述合并到（5）对变形和改变面积的推进器的复杂性进行建模的三维计算框架中，可以实现对运动力学的充分理解。此外，机器人模型将允许对推进器设计的变化进行进一步的实验研究，并测试运动和力产生之间的假设关系。这样一套全面的数据还没有提供任何灵活的推进器。在本文中，我们总结了我们的研究计划，其目标是通过研究一种鱼的胸鳍运动，为上述五个组成部分中的每一个产生一个全面的数据集：蓝鳃太阳鱼。许多鱼类使用胸鳍专门用于运动，并且大多数鱼类的胸鳍在操纵过程中不可或缺地产生力量。胸鳍是一种复杂的结构，由连接在一起的骨支撑物组成，这些骨支撑物通过胸鳍肌肉系统受到主动控制。在太阳鱼的推进过程中，鳍会发生相当大的变形，有两个前缘，太阳鱼可以旋转整个鳍，或者只是控制个别部分来引导推力。鳍材料特性沿鳍条长度和鳍条之间沿着变化。太阳鱼胸鳍运动的实验流体动力学分析表明，在整个鳍拍周期的鳍产生推力，并且上边缘和下边缘各自产生不同的同时前缘涡流。下面的配套文件提供了数据的计算方法，以了解运动使用灵活的胸鳍。
A full understanding of the mechanics of locomotion can be achieved by incorporating descriptions of (1) three-dimensional kinematics of propulsor movement, (2) material properties of the propulsor, (3) power input and control and (4) the fluid dynamics effects of propulsor motion into (5) a three-dimensional computational framework that models the complexity of propulsors that deform and change area. In addition, robotic models would allow for further experimental investigation of changes to propulsor design and for testing of hypothesized relationships between movement and force production. Such a comprehensive suite of data is not yet available for any flexible propulsor. In this paper, we summarize our research program with the goal of producing a comprehensive data set for each of the five components noted above through a study of pectoral fin locomotion in one species of fish: the bluegill sunfish Lepomis macrochirus. Many fish use pectoral fins exclusively for locomotion, and pectoral fins in most fish are integral to generating force during maneuvering. Pectoral fins are complex structures composed of jointed bony supports that are under active control via pectoral fin musculature. During propulsion in sunfish, the fin deforms considerably, has two leading edges, and sunfish can rotate the whole fin or just control individual sections to vector thrust. Fin material properties vary along the length of fin rays and among rays. Experimental fluid dynamic analysis of sunfish pectoral fin locomotion reveals that the fin generates thrust throughout the fin beat cycle, and that the upper and lower edges each produce distinct simultaneous leading edge vortices. The following companion paper provides data on the computational approach taken to understand locomotion using flexible pectoral fins.