仿生鱼鳍运动仿真分析及试验研究  

Simulation Analysis and Experimental Research on the Movements of Biomimetic Fin

作　　者：刘芳芳[1] 杨灿军[1] 苏琦[1] 王东海[1] 张译中[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,杭州310027

出　　处：《机械工程学报》2010年第19期24-29,共6页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(50675198)

摘　　要：仿生水下推进技术的研究日益受到科研工作者的青睐,尤其是仿生机器鱼的研究日益引起关注。在对柔性长鳍波动推进模型研究的基础上,提出一种尾鳍摆动与长鳍波动组合推进的模型,目的是为了提高已有柔性长鳍波动模型的推进性能。对柔性长鳍波动推进模型和组合推进模型进行介绍,着重利用计算流体动力学方法分别对刚性尾鳍摆动模型和柔性长鳍波动模型进行二维数值计算,并对仿真结果进行对比和分析,对模型进行简易流场显示试验,为进一步研究组合鳍的推进特性奠定了基础,同时便于和今后模型的试验数据进行对比分析。Researchers Pay more and more attention to the biomimetic underwater propulsive technologies,especially to the research on the robotic fish.To improve the performances of the propulsion system based on long flexible undulating fin,a method of combination of caudal fin and long flexible fin is proposed.The propulsive model of long flexible undulating fin and the propulsive model of composite fin are introduced.Comparison and analysis of the results obtained by using a two-dimensional computational fluid dynamics method for rigid caudal fin oscillating model and for long flexible undulating model are emphasized.Experiments which use a simplified particle image velocity method are done for better understanding the fluid mechanism and validating the simulation results.It provides the foundation for further research on the performance of this propulsive system.

关 键 词：仿生鱼鳍 尾鳍 柔性长鳍 计算流体动力学 动网格 

分 类 号：O352[理学—流体力学] TP242.3[理学—力学]