摘要
研究群组中个体之间的非定常流动机理,可以为仿生飞行器集群运动提供理论基础。采用基于有限元的计算流体力学方法,对前飞状态的扑翼群组个体之间水平间距对气动性能的影响进行研究。研究发现,水平间距对扑翼气动性能具有显著影响。在一定的垂直间距下,群组中扑翼可以在较小的水平间距下获得最佳的推力性能,在较大的水平间距下可以获得最佳的升力性能。扑翼气动性能的变化主要与群组中前翼和后翼的脱落涡相互作用密切相关。
The study of the unsteady flow mechanism between the individuals in a group can provide theoretical basis for the swarm motion of bionic aircraft.The influence of horizontal spacing between flapping wing flockings on aerodynamic performance in forward flight is studied by using computational fluid dynamics method based on finite element method.It is found that the horizontal spacing significantly affects the aerodynamic performance of flapping wings.Under a certain vertical spacing,flapping wings in flocking can obtain the best thrust performance at a small horizontal spacing,and the best lift performance can be obtained at a large horizontal spacing.The aerodynamic performance of flapping wings is closely related to the vortex shedding interaction between the front wing and the rear wing in flocking.
作者
王慧杰
孟雪广
聂良丞
陈刚
WANG Huijie;MENG Xueguang;NIE Liangcheng;CHEN Gang(State Key Laboratory for Strength and Vibration of Mechanical Structures,Xi'an Jiaotong University,710049 Xi'an,China;Shaanxi Key Laboratory for Environment and Control of Flight Vehicle,Xi'an Jiaotong University,710049 Xi'an,China;Key Laboratory of Aerodynamic Noise Control,621000 Mianyang,China;National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University,710072 Xi'an,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2022年第2期297-303,共7页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金资助项目(No.11872293,11702211,11672225)
中国博士后基金资助项目(No.2017M610631)
气动噪声控制重点实验室资助项目(No.1901ANCL20190108,1801ANCL20180103)
翼型叶栅空气动力学重点实验室资助项目(No.6142201190408)。
关键词
气动性能
流动机理
多扑翼
LEV
aerodynamic performance
flow mechanism
multi-flapping wing
LEV
