Study on optimization of energy capture performance of oscillating wing based on combination of Taguchi test method and CFD

In order to improve the energy capture performance of the oscillating wing, the Taguchi test and CFD method are used to optimize and analyze the five characteristic parameters that determine the energy capture performance of the oscillating wing. The results show that the characteristic parameters of the oscillating wing have an important effect on its energy capture performance. The difference of energy capture efficiency of the oscillating wing between the optimal and the worst parameters is 137.84%. The position of the pitching center has the greatest effect on the energy capture efficiency of the oscillating wing and should be given priority in the design of the experimental prototype. With respect to the five characteristic parameters studied, their effect degree on the energy capture performance of the oscillating wing is sorted from the largest to the smallest: xp/c,θ0, the relative thickness of airfoil, h0/c, f *. By analyzing the flow field of the oscillating wing with different parameter combinations, it is found that the vortex generated by the optimized oscillating wing is always attached on the surface of the airfoil, so that the oscillating wing can obtain better lift characteristics and capture more energy in the heaving motion. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.