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提出了一种新型的仿生水下混合推进模式,采用多尾鳍协调驱动方式融合了鱼类的波动推进模式和水母的射流推进模式,能够实现波动、射流、转弯、制动等机动动作。建立了刚性/柔性击水鳍运动学模型,着重利用计算流体动力学方法对刚性/柔性击水鳍的波动-射流推进运动进行了数值仿真,结果表明柔性击水鳍的动力特性和游动性能优于刚性击水鳍,为进一步研究多模式推进理论奠定了基础。
A new type of biomimetic underwater hybrid propulsion model is proposed. The multi-caudal fin coordinated driving mode combines the fish’s wave propulsion mode and the jellyfish’s jet propulsion mode to realize the maneuvering actions such as wave, jet, turn and brake. The kinematic model of rigid / flexible fin is established, and the numerical simulation of wave-jet propulsion motion of rigid / flexible fin is emphatically studied. The results show that the dynamic characteristics and swimming behavior of flexible fin are better than those of rigid Fins hit the ground, which laid the foundation for further research on the multimodal propulsion theory.