刚性胸鳍的运动函数中包含有多个参数,各个参数对胸鳍水动力的产生有很大的影响。本文结合不可压、非定常N—S方程求解器和Hooks—Jeeves优化方法,研究静水情况下和有来流情况下,基于升力推进模式的胸鳍运动方式的参数优化,使胸鳍的运动能够产生最大平均推力及较小的平均升力,结果表明Hooks.Jeeves方法能够有效处理胸鳍运动参数优化问题,并给出了优化后的运动参数及对应的平均推力系数和平均升力系数。
There are several parameters in the kinematic model of rigid pectoral fin, and every parameter has great effect on the hydrodynamic forces generated by pectoral fin. Combining the incompressible, unsteady N-S equations solver and the Hooks-Jeeves optimization method, the parameters of the kinematic model for the lift-based swimming mode is optimized so that the motion of the pectoral fin generates the maximum average thrust and the minimum average lift force in the case of still water and uniform flow, respectively. The results show the Hooks-Jeeves optimization method can effectively deal with the parameters optimization of the pectoral fin motion, and the optimized motion parameters, the corresponding average thrust and average lift force are given.