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Unsteady Aerodynamics of Two Dimensional Insect Flight

  • Lisa J. Fauci
  • Shay Gueron
Part of the The IMA Volumes in Mathematics and its Applications book series (IMA, volume 124)

Abstract

Motivated by our interest in unsteady aerodynamics of insect flight, we compute the Navier-Stokes equation around a two dimensional flapping wing. The analysis of unsteady flows in forward flight reveals a mechanism of frequency selection, which results from the two intrinsic time scales associated with the shedding of leading and trailing edge vortices. The predicted preferred frequency scales inversely with the size of the wing, which is consistent with the zoological observation. The computation of hovering flight uncovers an intrinsic mechanism of generating lift by creating a downward jet of counter-rotating vortex pairs. The average computed forces in a generic hovering flight are shown to be sufficient to support typical insect weight.

Keywords

Lift Coefficient Vorticity Field Lead Edge Vortex Forward Velocity Edge Vortex 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Lisa J. Fauci
    • 1
  • Shay Gueron
    • 2
  1. 1.Department of MathematicsTulane UniversityNew OrleansUSA
  2. 2.Department of MathematicsTechnion—Israel Institute of TechnologyHaifaIsrael

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