【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,本文以金枪鱼尾鳍为研究对象,建立了三维刚性仿生尾鳍模型,使用大型通用CFD商业软件FLUENT对特定工况下尾鳍作纵摇升沉耦合运动的非定常流场进行了数值计算,给出了尾鳍的水动力系数和尾流区域的流场特征图,初步探讨了三维仿生尾鳍的推进机理。更多还原

【Abstract】 Aiming at the development of a bionic maneuverable propulsion system applied in the small underwater vehicle,a three-dimensional rigid bionic model of the caudal fin is established on the basis of the caudal fin of tunny.The unsteady flow field of pitching and heaving model is simulated numerically by means of the large commercial computational fluid dynamic software FLUENT.The hydrodynamic coefficients of the caudal fin as well as the characteristic figures of the flow field in the back area are obtained.The propelling mechanisms of 3D bionic caudal fin are explored.更多还原