波状摆动式鱼类的推进性能研究  

A Numerical Simulation of the Propulsion Performance of Undulatory Fish Swimming

作　　者：丛文超[1] 王志东[1] 李力军[1] 

机构地区：[1]江苏科技大学船舶与建筑工程学院张家港校区,江苏张家港215600

出　　处：《中国舰船研究》2010年第4期1-5,共5页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(50879031)

摘　　要：以开发适用于小型潜器的仿生操纵与推进系统为研究背景,利用计算流体动力学软件Fluent对波状摆动式鱼类进行了数值模拟,建立波状摆动式鱼类的数值计算模型,研究不同变形参数对鱼类推进性能以及尾涡流场结构的影响。结果表明,随着波长的增加,鱼类能够获得更好的推进性能。通过对比不同频率下鱼类推进性能以及流场结构,探讨不同滑移率及斯特劳哈尔数对推进性能影响。Aiming at development of bionic maneuverable propulsion system applied in the small underwater vehicle,a numerical simulation of hydrodynamic characters of undulatory fish swimming was completed by means of the CFD software Fluent.The numerical calculation model of undulatory fish swimming was established.The effect of deformation parameters on the propulsion performance and vortex flow field structure was studied.The results show that greater propulsion is acquired when the wave length is increasing.The effect of slip ratio and Strouhal number on the propulsion performance is discussed by comparing both flow field structure and propulsion performance of fish under different frequencies.

关 键 词：鱼类 波长 斯特劳哈尔数 水动力性能 流场结构 

分 类 号：U664.3[交通运输工程—船舶及航道工程]