Two Dimensional Mechanism for Insect Hovering
Resolved computation of two dimensional insect hovering shows for the first time that a two dimensional hovering motion can generate enough lift to support a typical insect weight. The computation reveals a two dimensional mechanism of creating a downward dipole jet of counterrotating vortices, which are formed from leading and trailing edge vortices. The vortex dynamics further elucidates the role of the phase relation between the wing translation and rotation in lift generation and explains why the instantaneous forces can reach a periodic state after only a few strokes. The model predicts the lower limits in Reynolds number and amplitude above which the averaged forces are sufficient. (c) 2000 The American Physical Society.
- OSTI ID:
- 20217644
- Journal Information:
- Physical Review Letters, Vol. 85, Issue 10; Other Information: PBD: 4 Sep 2000; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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