[1] Yin Dongfu, Zhang Zhisheng,. Aerodynamics of flexible wing in bees’ hovering flight [J]. Journal of Southeast University (English Edition), 2013, 29 (4): 419-424. [doi:10.3969/j.issn.1003-7985.2013.04.012]

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Aerodynamics of flexible wing in bees’ hovering flight()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

29

Issue:

2013 4

Page:

419-424

Research Field:

Other Disciplines

Publishing date:

2013-12-20

Info

Title:

Aerodynamics of flexible wing in bees’ hovering flight

Author(s):

Yin Dongfu;  Zhang Zhisheng

School of Mechanical Engineering, Southeast University, Nanjing 211189, China

Keywords:

flapping wing;  coordinate systems;  hovering flight;  computational fluid dynamics;  aerodynamics force;  power

PACS:

V211.3

DOI:

10.3969/j.issn.1003-7985.2013.04.012

Abstract:

The aerodynamics of 2-dimensional flexible wings in bees’ normal hovering flight is studied. Four insect flapping flight coordinate systems, including a global system, a body-fixed system, a rigid wing-fixed system and a flexible wing-fixed system, are established to represent the insects’ position, gesture, wing movement and wing deformation, respectively. Then the transformations among four coordinate systems are studied. It is found that the elliptic coordinate system can improve the computation accuracy and reduce the calculation complexity in a 2-dimensional rigid wing. The computation model of a 2-dimensional flexible wing is established, and the changes of the force, moment, and power are investigated. According to the computation results, the large lift and drag peaks at the beginning and end of the stroke can be explained by the superposition of the rapid translational acceleration, the fast pitching-up rotation and the Magnus effect; and the small force and drag peaks can be explained by the convex flow effect and the concave flow effect. Compared with the pressure force, pressure moment and translational power, the viscous force, viscous moment and rotational power are small and can be ignored.

References:

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Memo

Memo:

Biographies: Yin Dongfu(1986—), male, graduate; Zhang Zhisheng(corresponding author), male, doctor, professor, oldbc@seu.edu.cn.
Foundation items: The Fundamental Research Funds for the Central Universities(No.3202003905), Scientific Innovation Research of College Graduates in Jiangsu Province(No.CXLX12_0080).
Citation: Yin Dongfu, Zhang Zhisheng.Aerodynamics of flexible wing in bees’ hovering flight[J].Journal of Southeast University(English Edition), 2013, 29(4):419-424.[doi:10.3969/j.issn.1003-7985.2013.04.012]

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