翼
拍打
空气动力学
机翼扭转
阻力
流固耦合
Lift(数据挖掘)
推力
空气动力
结构工程
航空航天工程
计算机科学
工程类
攻角
有限元法
数据挖掘
作者
Jie Qin,Lun Li,Yongping Hao,Jiulong Xu,Fan Bai,Jintao Ye
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2020-10-01
卷期号:10 (10)
被引量:4
摘要
Birds in nature adjust the shape of their wings in time according to the change in wind resistance to achieve the purpose of increasing lift and reducing drag, thereby achieving higher flight efficiency. Aiming at the aerodynamic change caused by the flexible deformation of the flapping wing, an analysis model of the flexible wing is established. The two-way fluid–solid coupling method is used to construct the control equations in an arbitrary Lagrange–Euler coordinate system and analyze the overall aerodynamic changes in the flapping process of the flexible flapping wing and the deformation of the wing surface and skeleton. The simulation results show the following: The larger lift force and forward thrust can be obtained from the flapping of the flexible wing, but the larger flexible deformation will lead to the increase in resistance, which leads to the decline of the overall aerodynamic efficiency. Therefore, the flexible wing structure should be designed to ensure that the wing has a certain degree of flexibility and improve the stiffness of the wing.
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