Journal
FLUID DYNAMICS RESEARCH
Volume 50, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1873-7005/aa908f
Keywords
helicity; turbulence; flapping flight; wavelets
Categories
Funding
- ANR [15-CE40-0019]
- DFG [SE 824/26-1]
- project Equip@Meso [ANR-10-EQPX29-01]
- ministeres des Affaires etrangeres et du developpement International (MAEDI) et de l'Education nationale de l'Enseignement superieur et de la Recherche (MENESR)
- Deutscher Akademischer Austauschdienst (DAAD) within the French-German Procope project FIFIT
- JSPS (Japan Society for the Promotion of Science) Postdoctoral Fellowship, JSPS KAKENHI [15F15061]
- [i20152a1664]
- Grants-in-Aid for Scientific Research [15F15061] Funding Source: KAKEN
Ask authors/readers for more resources
High resolution direct numerical simulations of rotating and flapping bumblebee wings are presented and their aerodynamics is studied focusing on the role of leading edge vortices and the associated helicity production. We first study the flow generated by only one rotating bumblebee wing in circular motion with 45. angle of attack. We then consider a model bumblebee flying in a numerical wind tunnel, which is tethered and has rigid wings flapping with a prescribed generic motion. The inflow condition of the wind varies from laminar to strongly turbulent regimes. Massively parallel simulations show that inflow turbulence does not significantly alter the wings' leading edge vortex, which enhances lift production. Finally, we focus on studying the helicity of the generated vortices and analyze their contribution at different scales using orthogonal wavelets.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available