Propulsive properties of a flexible oscillating wing with time-varying camber deformation

被引:7
|
作者
Li, Yongcheng [1 ,2 ]
Pan, Ziying [1 ,2 ]
Zhang, Nan [1 ,2 ]
机构
[1] China Ship Sci Res Ctr, Sci Res Dept Hydrodynam, Wuxi 214082, Jiangsu, Peoples R China
[2] China Ship Sci Res Ctr, Natl Key Lab Hydrodynam, Wuxi 214082, Jiangsu, Peoples R China
关键词
Oscillating wing; Flexible deformation; Dynamic mesh technique; Propulsive performance; FLAPPING FOILS; HYDRODYNAMIC PERFORMANCE; WAKE; FLOW; SIMULATION; HYDROFOIL; PLATE;
D O I
10.1016/j.oceaneng.2021.109332
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
In this article, a new conceptual design of flexible oscillating wing with time-varying camber deformation is introduced and the two-dimensional transient numerical simulation has also been conducted to compare the propulsive performance of current flexible oscillating wing with that of conventional rigid oscillating wing by using of the commercial software ANSYS Fluent 18.2 coupled with the dynamic mesh technique at moderate high Reynolds number of 1.0 x 10(6). In addition, the influence of the deflection amplitude, the deflection frequency as well as the deflection position along the chord length of the wing on the propulsive performance of current flexible oscillating wing have been analyzed. The numerical simulation results demonstrate that the introduction of flexible deformation motion does much good on improving the propulsive performance of oscillating wing and there exists optimum motion parameters leading to the highest propulsive efficiency. Compared with the conventional rigid oscillating wing, the existence of flexible deformation motion presents greater propulsive efficiency by largely increasing the thrust force within the whole period of motion and the maximum value of eta can be increased by 28.3% compared with that of conventional rigid wing. Furthermore, the results also reveal that the optimum deflection motion should coincide with the rotation center of rigid motion and that conclusion provides much benefit for the future design of prototype manufacture.
引用
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页数:16
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