• CN：11-2187/TH
• ISSN：0577-6686

›› 2011, Vol. 47 ›› Issue (3): 1-7.

• 论文 •

### 尾鳍运动行为对仿鱼机器人稳态游动性能的影响

1. 哈尔滨工业大学机器人技术与系统国家重点实验室
• 发布日期:2011-02-05

### Effect of Kinematic Behavior of Caudal Fin on Fishlike Robot Propulsion during Steady Swimming

CHEN Weishan;XIA Dan;LIU Junkao;SHI Shengjun

1. State Key Laboratory of Robotics and System, Harbin Institute of Technology
• Published:2011-02-05

Abstract: The speed convergence algorithm is applied in the numerical simulation of a fishlike robot in self-propelled swimming. All simulations are started with the body at rest, the swimming speed is dynamically modified to converge to the steady value by verifying the fluid forces during the swimming process. The effects of kinematic behavior of caudal fin on fishlike robot propulsion are numerical investigated in the converged steady speed, while the propulsive mechanism and flow field structure are revealed. The results show that the steady speed can be predicted validly by using the speed convergence algorithm, while the relation between the kinematic behavior and the propulsion, power consumption and propulsive efficiency can be obtained through varying the phase difference and the maximum angle of attack. The effects of kinematic behavior of caudal fin on the wake structure and wake strength are clearly reflected in the three dimensional flow field structures. The findings are of great significance to the swimming speed prediction, effect of kinematic behavior on fishlike robot propulsion as well as the motion parameter design for fishlike robot.