侧风来流对系留无人机的数值模拟研究  

Numerical simulation study of incoming crosswinds on tethered UAV

作　　者：江鸿博 刘超峰 汤志仁 侯飞宇 JIANG Hongbo;LIU Chaofeng;TANG Zhiren;HOU Feiyu(School of Mechanical and Automobile Engineering,SUES,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《飞行力学》2025年第1期42-47,55,共7页Flight Dynamics

摘　　要：针对系留无人机悬停过程中的侧风扰动问题,开展系留无人机的数值模拟研究。首先,建立系留无人机的有限元模型。然后,采用流固耦合方法及标准k-ε湍流模型,并搭配滑移网格技术进行数值模拟,结合试验验证模型的准确性和有效性。最后,通过改变侧风速度和迎风角大小的方法,对无人机表面压力变化和系留线缆的形变和张力进行研究。结果表明,侧风来流速度越大,无人机表面压力越大,升/阻力系数越大,线缆的整体形变和张力也越大。相对于无迎风角时,60°迎风角下阻力系数增加40%,侧风来流15 m/s时线缆中点位置形变和张力减小了21.15%和27.56%。A numerical simulation study of a tethered UAV is carried out,aiming at the crosswind disturbance problem during hovering.Firstly,a finite element model of the tethered UAV is estab-lished.Then,the numerical simulation is carried out by using the method of fluid-structure interac-tion and the standard k-εturbulence model with the sliding mesh technique,and the model’s accu-racy and validity are verified by combining with these tests.Finally,the pressure changes on the UAV’s surface and the tethered cable’s deformation and tension are investigated by changing the crosswind speed and the size of the angle of wind approach.The results show that the larger the ve-locity of incoming crosswinds,the larger the UAV surface pressure,the larger the lift/drag coeffi-cient,and the larger the overall deformation and tension of the cable.The drag coefficient increased by 40%at 60°angle of wind approach,and the deformation and tension at the midpoint of the cable decreased by 21.15%and 27.56%at 15 m/s respectively,relative to that at 90°angle of wind ap-proach.

关 键 词：系留无人机 侧风 流固耦合 数值模拟 

分 类 号：V279[航空宇航科学与技术—飞行器设计]