A Numerical Study on the Aerodynamics Effects of Time-Changing Wing Flexible Deformation in its Flapping Motions

doi:10.7523/j.issn.2095-6134.2005.6.003

Abstract

Abstract:

A computational fluid dynamic study,based on 2-D incompressible Navier-Stokes Equations,is presented to investigate the aerodynamics effects of time-changing wing flexible deformation in its flapping.Two elementary motions of the wing flapping,i.e. accelerated translation and non-uniform rotation,are studied,in which both the flexible and rigid wing cases are compared.It is revealed that in comparison of the rigid wing case,the wing deformation acceleration in the flexible wing case leads to the added inertial effect,which causes a lot of change in instantaneous aerodynamic performance of the wing.With regard to the time-averaged one,the flexibility effect is much less.

Key words: flexible wing flapping in insects flight, time-changing wing deformation, wing deformation acceleration, elementary motions, computational fluid dynamics

CLC Number:

O035

BAO Lin, TONG Bing-Gang. A Numerical Study on the Aerodynamics Effects of Time-Changing Wing Flexible Deformation in its Flapping Motions[J]. , 2005, 22(6): 676-684.

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