多尾鳍仿生推进器多推进模式运动仿真研究

Studyon Multi-propulsion Mode Movements Simulation of Multi-fins Bionic Propeller

提出了一种新型水下仿生推进器,采用多尾鳍协调驱动方式实现了鱼类波动推进模式和水母射流推进模式的有机复合,建立了多尾鳍波动-射流推进的运动学模型,着重利用计算流体动力学方法对多尾鳍波动-射流推进运动进行了仿真分析。研究结果表明:在特定运动参数下,多尾鳍波动推进模式能提供持续均匀的推进力,游动稳定性好;而射流推进模式,能产生瞬间的大推进力,加速性能好。研究内容为进一步探索多模式推进理论提供了依据。

A novel type of bionic underwater propeller was proposed.By the means of the coordination control of the multi-fins,a propulsion mode was developed reasonably combining the undulation propulsion and jet propulsion.The multi-fins undulation propulsion and jet propulsion kinematics model was established.Simulation analysis by using computational fluid dynamics( CFD) method for multi-fins undulation propulsion mode and jet propulsion mode were emphasized.In the specific movement parameters,the results show that the multi-fins undulation propulsion mode can provide continuous and uniform propulsion with characteristic of better swimming stability,and the jet propulsion mode can generate a big push force instantaneous with the characteristic of better acceleration performance.It provides the foundation for further study on the multi-mode propulsion theory.