| Where is the rudder of a fish？： the mechanism of swimming and control of self-propelled fish school |
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| 作者姓名： | Chuijie Wu Liang Wang |
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| 作者单位： | [1]tate Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, 116024 Dalian, China [2]School of Aeronautics and Astronautics,Dalian University of Technology, 116024 Dalian, China [3]Research Center for Fluid Dynamics, PLA Universityof Science and Technology, 211101 Nanjing, China |
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| 基金项目： | supported by the National Natural Science Foundation of China(10172095 and 10672183) |
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| 摘 要： | Numerical simulation and control of self- propelled swimming of two- and three-dimensional biomimetic fish school in a viscous flow are investigated. With a parallel computational fluid dynamics package for the two- and three-dimensional moving boundary problem, which combines the adaptive multi-grid finite volume method and the methods of immersed boundary and volume of fluid, it is found that due to the interactions of vortices in the wakes, without proper control, a fish school swim with a given flap- ping rule can not keep the fixed shape of a queue. In order to understand the secret of fish swimming, a new feedback con- trol strategy of fish motion is proposed for the first time, i,e., the locomotion speed is adjusted by the flapping frequency of the caudal, and the direction of swimming is controlled by the swinging of the head of a fish. Results show that with this feedback control strategy, a fish school can keep the good order of a queue in cruising, turning or swimming around circles. This new control strategy, which separates the speed control and direction control, is important in the construction of biomimetic robot fish, with which it greatly simplifies the control devices of a biomimetic robot fish.
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| 关 键 词： | 自我控制 鱼群 游泳 移动边界问题 仿生机器鱼 计算流体动力学 自适应多重网格 机制 |
| 收稿时间： | 4 February 2009 |
Where is the rudder of a fish?: the mechanism of swimming and control of self-propelled fish school |
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| Chuijie Wu,Liang Wang.Where is the rudder of a fish?: the mechanism of swimming and control of self-propelled fish school[J].Acta Mechanica Sinica,2010,26(1):45-65. |
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| Authors: | Chuijie Wu Liang Wang |
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| Institution: | [1]tate Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, 116024 Dalian, China [2]School of Aeronautics and Astronautics,Dalian University of Technology, 116024 Dalian, China [3]Research Center for Fluid Dynamics, PLA Universityof Science and Technology, 211101 Nanjing, China |
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| Abstract: | Numerical simulation and control of selfpropelled swimming of two-and three-dimensional biomimetic fish school in a viscous flow are investigated.With a parallel computational fluid dynamics package for the two-and three-dimensional moving boundary problem,which combines the adaptive multi-grid finite volume method and the methods of immersed boundary and volume of fluid,it is found that due to the interactions of vortices in the wakes, without proper control,a fish school swim with a given flapping rule ca... |
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| Keywords: | Self-propelled swimming Feedback control strategy of fish swimming Direction control Locomotion speed control Three-dimensional biomimetic fish |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
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