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侧风对拍动翅气动力的影响

牟晓蕾 许娜

牟晓蕾, 许娜. 侧风对拍动翅气动力的影响[J]. 北京航空航天大学学报, 2017, 43(11): 2310-2315. doi: 10.13700/j.bh.1001-5965.2017.0210
引用本文: 牟晓蕾, 许娜. 侧风对拍动翅气动力的影响[J]. 北京航空航天大学学报, 2017, 43(11): 2310-2315. doi: 10.13700/j.bh.1001-5965.2017.0210
MOU Xiaolei, XU Na. Effects of lateral wind on aerodynamic force of a flapping wing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2310-2315. doi: 10.13700/j.bh.1001-5965.2017.0210(in Chinese)
Citation: MOU Xiaolei, XU Na. Effects of lateral wind on aerodynamic force of a flapping wing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2310-2315. doi: 10.13700/j.bh.1001-5965.2017.0210(in Chinese)

侧风对拍动翅气动力的影响

doi: 10.13700/j.bh.1001-5965.2017.0210
基金项目: 

国家自然科学基金 11502228

山东省自然科学基金 ZR2016AL08

山东省自然科学基金 BS2014SW016

详细信息
    作者简介:

    牟晓蕾  男, 博士, 讲师。主要研究方向:仿生流体力学

    许娜  女, 博士, 讲师。主要研究方向:仿生流体力学

    通讯作者:

    许娜, E-mail: naxu@ytu.edu.cn

  • 中图分类号: V221+.3;TB553

Effects of lateral wind on aerodynamic force of a flapping wing

Funds: 

National Natural Science Foundation of China 11502228

Shandong Provincial Natural Science Foundation, China ZR2016AL08

Shandong Provincial Natural Science Foundation, China BS2014SW016

More Information
  • 摘要:

    昆虫在自然界中飞行时多会受到侧风的干扰,因此了解侧风作用下昆虫拍动翅上气动力的变化对昆虫飞行机理的研究工作具有重要意义。应用计算流体力学(CFD)方法模拟了存在侧风时拍动翅上绕流,并与正常悬停情况进行对比,从侧风的方向和强度2个方面考察了其对拍动翅气动特性的影响。结果表明:侧风对拍动翅气动特性的改变包含2个流动机制的贡献,即相对速度效应和前缘涡轴向速度效应,且从翅尖吹向翅根的侧风与从翅根吹向翅尖的侧风对气动力的影响有着显著的不同;而不同强度的同向侧风下,气动力的改变类似,仅存在数值上的差异。

     

  • 图 1  蜂蝇模型翅平面图[9]及剖面图

    Figure 1.  Planform[9] and sectional view of model dronefly wing

    图 2  模型翅运动及坐标系示意图

    Figure 2.  Schematic of reference frames of wing motion

    图 3  拍动翅上升力系数和阻力系数在一个拍动周期内随时间的变化曲线

    Figure 3.  Time courses of lift coefficient and drag coefficient of flapping wing in one flapping cycle

    图 4  在侧风时(v=±0.10U)拍动翅上ΔCL和ΔCD随时间的变化

    Figure 4.  Time courses of ΔCL and ΔCD of flapping wing with lateral wind (v=±0.10U)

    图 5  v=±0.10U时侧风垂直翅展向分量和平行翅展向分量示意图

    Figure 5.  Schematic of chordwise component and spanwise component of lateral wind of wing at v=±0.10U

    图 6  v=±0.10U时下拍阶段=0.25翅膀上距翅根0.6R~0.9R处截面等涡量线

    Figure 6.  Vorticity contours at wing sections 0.6R-0.9R from wing root during downstroke at =0.25 and lateral wind velocity v=±0.10U

    图 7  不同侧向风速下和正常悬停飞行(无侧风)时拍动翅上升力系数和阻力系数在一个拍动周期内随时间的变化曲线

    Figure 7.  Time courses of lift coefficient and drag coefficient of flapping wing in one flapping cycle under different lateral winds and normal hovering flight (with no lateral wind)

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出版历程
  • 收稿日期:  2017-04-06
  • 录用日期:  2017-06-30
  • 刊出日期:  2017-11-20

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