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Influence of wing camber on aerodynamic performance of flapping wing rotor

机译:机翼弯曲对扑翼转子空气动力学性能的影响

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The flapping wing rotor (FWR) is a new type of micro aerial vehicles (MAV), which generates lift through active flapping and passive rotation of antisymmetric wings. Based on the experimental of flapping wings and FWR, the concept of chordwise curved wing is proposed. In this paper, numerical simulations based on Reynolds-averaged Navier Stokes (RANS) equations combined with SST k-omega turbulence model are conducted to study the influence of the height of maximum camber and position of maximum camber on the lift generated by three-wings FWR. Dynamic meshing methods driven by an in-house user-defined function (UDF) are used to model the motion of FWR. The midpoint stroke stage of FWR wings is analyzed in detail. The results show that camber has a great influence on the lift of the FWR. When the maximum camber is less than 0.25c, increase of lift can be achieved for the increase of the maximum camber. And the closer the maximum camber position is to the middle position of the mean aerodynamic chord, the more lift FWR generates.(c) 2021 Elsevier Masson SAS. All rights reserved.
机译:拍打翼转子(FWR)是一种新型的微型空中车辆(MAV),通过反向翼的主动拍打和被动旋转产生升力。基于拍打翅膀和FWR的实验,提出了赤道弯曲翼的概念。在本文中,进行了基于雷诺平均的Navier Stokes(RANS)与SST k-Omega湍流模型的数值模拟,以研究最大弯曲的高度和最大弯曲的位置对三翼产生的升力的影响FWR。由内部用户定义函数(UDF)驱动的动态网格化方法用于模拟FWR的运动。详细分析了FWR翼的中点行程阶段。结果表明,露营对FWR的升力有很大影响。当最大弧形小于0.25℃时,可以实现升力的增加,以增加最大弯曲的增加。并且最大弯曲位置越接近平均空气动力学和平的中间位置,升降机越多。(c)2021 Elsevier Masson SAS。版权所有。

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