基于FLUENT的摆动尾鳍水动力特性研究

Investigation of hydrodynamic performance for bionic caudal fin based-on fluent

根据水动力学理论,提出了摆动尾鳍的水动力学模型,利用Fluent的动网格技术,探讨了最大击水角度以及摆动与平动对尾鳍水动力性能的影响。研究结果表明,鱼类的逃逸姿态与其巡游姿态分别对应不同的参数。在相位差固定的情况下,鱼类可以很容易地在两种姿态间切换。研究内容为进一步探讨鱼类如何兼顾各种游动姿态,研制新型高效仿鱼机器人提供了理论依据。

According to hydrodynamics,a hydrodynamic model of the bionic caudal fin is established,and then the influence on the characteristic of hydrodynamics caused by the changing of the maximum attack angle and the phase difference of heaving and pitching is further discussed by using the dynamic mesh technique of Fluent.The results show that the parameters are different when the fish escapes or cruises.Besides,when the phase difference is fixed,it is easy for the fish to change the posture between the two kinds.These provide a theoretical basis for further discussing how the fish adjust the different swimming postures and developing new efficient fish-like robots.