A Stiffness-Adjusting Method to Improve Thrust Efficiency of a Two-Joint Robotic Fish

被引：1
|
作者：
Xu, Dong [1 ]
Zhang, Shaoguang [1 ]
Wen, Li [2 ]
机构：
[1] Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China
[2] Beihang Univ, Mech Engn & Automat Inst, Beijing 100191, Peoples R China
来源：
ADVANCES IN MECHANICAL ENGINEERING | 2014年
关键词：
UNDULATING FISH; HYDRODYNAMICS; BODY;
D O I：
10.1155/2014/537905
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Fish are very efficient swimmers. In this paper, we studied a two degree-of-freedom (DOF) propeller that mimic fish caudal fin like locomotion. Kinematics modelling and hydrodynamic CFD analyses of the two DOF propellers were conducted. According to the CFD simulation, we show that negative power was generated within the flapping cycle, and wake flow at different instant was demonstrated. Based on the dynamic model, we compared the thrust efficiency under different stiffness control method. The results show that the thrust efficiency was enhanced under moderate stiffness control strategy.
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页数：7
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