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对自主推进尾鳍的水动力特性进行数值模拟,分析了尾鳍在静水中作纵摇以及自主航行运动时的流场结构及水动力性能,建立了尾鳍摆动自主推进数值计算模型,研究了不同运动参数对尾鳍流场结构及水动性能的影响,确定了自主推进模式下的尾鳍运动速度,结果表明,随着尾鳍摆动频率的增加,尾鳍能够获得更大的推进和前进速度;通过对比尾鳍在约束模式和自主航行模式下的尾涡流场结构及演变过程,探讨了尾鳍惯性对其推进性能的影响.计算结果与文献模型实验具有良好的一致性.
Aiming at the development of bionic maneuverable propulsion system applied to the small under-water vehicle,numerical simulation of hydrodynamic character of self-propulsion caudal fin was completed by means of the computational fluid dynamic software Fluent.The field structure and hydrodynamic performance of caudal fin with pitching and self-propulsion movement were computed.The numerical calculation model of self-propulsion caudal fin was established.Furthermore,the effect of different parameters on the flow structure and hydrodynamic performance of caudal fin was studied and the velocity of self-propulsion caudal fin was determined.The result shows that great propulsion and high speed are acquired when the oscillating frequency of caudal fin is increasing.The effect of caudal fin inertial on the propulsion performance is discussed through comparing vortex field structure and the evolution process under the constraint mode and self-propulsion mode.The calculation results are in good agreement with these of experimental measurement in the literature.
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2010年第6期523-528,共6页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
国家自然科学基金资助项目(50879031)
关键词
尾鳍
纵摇运动
自主推进
流场
caudal fin
pitching movement
self-propulsion
flow field
