Hydrodynamic Analysis On The Shape Of Bionic Fish Based On Cfd

The research of underwater bionics technology has been paid more attention. In this paper, we established four kinds of bionic fish models adopted reverse engineering method. In order to explore the relationship between the shape and swimming velocity, we analyzed the lift-drag ratio of these models applying computational fluid dynamics (CFD) technology. Besides, the surface pressure distribution and the hydrodynamic characteristics also been studied, which can improve the kinematic performance of bionic robotic fish. Finally, the simulation results showed that the Carangidae bionic model has the optimal shape and lift-drag ratio, which laid a theoretical foundation for further engineering design and application.