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蜻蜓翼三维流动结构的演变

赖国俊 申功炘

赖国俊, 申功炘. 蜻蜓翼三维流动结构的演变[J]. 北京航空航天大学学报, 2013, (6): 711-716.
引用本文: 赖国俊, 申功炘. 蜻蜓翼三维流动结构的演变[J]. 北京航空航天大学学报, 2013, (6): 711-716.
Lai Guojun, Shen Gongxin. Revolution of flow structures around model wing of dragonflies in hovering flight[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (6): 711-716. (in Chinese)
Citation: Lai Guojun, Shen Gongxin. Revolution of flow structures around model wing of dragonflies in hovering flight[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (6): 711-716. (in Chinese)

蜻蜓翼三维流动结构的演变

基金项目: 国家自然科学基金资助项目(10772017); 985基金二期资助项目
详细信息
  • 中图分类号: O351

Revolution of flow structures around model wing of dragonflies in hovering flight

  • 摘要: 为了与蜻蜓前后翼流动干扰的流动结构作比较,首先研究了悬停飞行状态下单个蜻蜓翼周围的三维流动结构,利用一套机电拍动翼运动模拟机构模拟了一个蜻蜓翼的拍动,使用数字体视粒子图像测速技术(DSPIV,Digital Stereo Particle Image Velocimetry)和多切面锁相技术分别测量了两个下拍拍动相位时刻(t=0.25T,0.375T)和两个上拍拍动相位时刻(t=0.75T,0.875T)蜻蜓翼周围的瞬时空间三维流场,运用局部涡识别准则中的λci准则来识别和显示了流场中的三维涡结构,还展示了蜻蜓翼各个展向测量截面中的|ωz|等值线、蜻蜓翼前缘涡的涡核线相对于蜻蜓翼上翼面的空间位置以及前缘涡在各个展向测量截面中的截面环量等.实验结果揭示了蜻蜓翼周围的三维流动结构在蜻蜓翼拍动时的演变历程.

     

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出版历程
  • 收稿日期:  2012-05-24
  • 网络出版日期:  2013-06-30

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