Influence of wing kinematics on aerodynamic performance in hovering insect flight
Influence of wing kinematics on aerodynamic performance in hovering insect flight
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DOI：
10.1017/s0022112007009172
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发表时间：
2008-01-10
影响因子：
3.7
通讯作者：
Bijl, H.
中科院分区：
文献类型：
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作者：
Bos, Frank M.;Lentink, D.;Bijl, H.
采用二维非定常Navier-Stokes方程数值模拟方法，研究了不同机翼运动模型对昆虫悬停气动性能的影响。为此，简化的模型进行了比较，平均表示的悬停果蝇翅膀运动学。随着复杂性的增加，谐波模型，Robofly模型和两个更现实的果蝇模型被认为是，所有动态缩放Re = 110。为了便于比较，模型参数的选择应使它们的平均准定常升力系数相匹配。详细的涡动力学，以及由此产生的升力和阻力，进行了研究。模拟结果表明，果蝇翅膀运动学的结果，从简化的翅膀运动学模型所产生的力显着不同。此外，光棚上的昆虫翅膀运动的不同特征的效果。果蝇使用的攻角变化增加了空气动力学性能，而偏差可能用于在整个循环中平衡力。
The influence of different wing kinematic models on the aerodynamic performance of a hovering insect is investigated by means of two-dimensional time-dependent Navier-Stokes simulations. For this, simplified models are compared with averaged representations of the hovering fruit fly wing kinematics. With increasing complexity, a harmonic model, a Robofly model and two more-realistic fruit fly models are considered, all dynamically scaled at Re = 110. To facilitate the comparison, the parameters of the models were selected such that their mean quasi-steady lift coefficients were matched. Details of the vortex dynamics, as well as the resulting lift and drag forces, were studied.The simulation results reveal that the fruit fly wing kinematics result in forces that differ significantly from those resulting from the simplified wing kinematic models. In addition, light is shed on the effect of different characteristic features of the insect wing motion. The angle of attack variation used by fruit flies increases aerodynamic performance, whereas the deviation is probably used for levelling the forces over the cycle.