空气动力学学报Issue(5)：634-640,7.DOI:10.7638/kqdlxxb-2013.0022
多尾鳍仿生航行器推进性能的三维数值研究
Prpppsipn perfprmance pf three-dimensipnal bipmimetic underwater vehicle
摘要
Abstract
A numercial code for 3-dimensional fluid flow around swimming bodies were developed .The Immersed Boundary method (IBM)was applied to characterize the moving and deformable fluid-body inter-face in terms of a momentum forcing so that bodies′motion and fluid flow were uncoupled.The fluid flow was solved by Lattice Boltzmann method (LBM)which was well suited to be parallelized and the body mo-tion was devided into beating which was pre-specified and swimming which was calculatied according to the resultant forces and moments.Then,the self-propulsion of a biomimetic unmanned underwater vehicle (UUV)with multiple fins was simulated,and the effects of fins′properties and of beating parameters on the propulsion performance were discussed in detail.It was shown that the lateral force generated by symmetric double fins almost vanished,and the trust was enhanced where the vehicle cruise speed was larger than twice the speed by single fin.UUV propelled by flexible fins swam much faster than that by rigid ones.Under the condition of present work,the optimized wavelength of the flexible fin is about 1.25 times the fin length, and the vehicle swam faster with lager beating amplitude or with higher frequency.The propulsion perform-ance of Semi-oval-shaped caudal fin was better than that of deeply forked tail fin when the vehicle paraded with low speed.关键词
仿生航行器/双尾鳍/三维/推进性能Key words
biomimetic underwater vehicle/double fin/three-dimensional/propulsion performance分类
航空航天引用本文复制引用
张智伟,易淼荣,敬军,秦丰华,杨基明..多尾鳍仿生航行器推进性能的三维数值研究[J].空气动力学学报,2014,(5):634-640,7.基金项目
国家自然科学基金（11272310）；中国舰船研究设计中心 B 类研发基金 （）
