ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH - Dimitry Kolomenskiy (JAMSTEC, Japon)
Bumblebee in flight and in digit
Flight as a mode of animal locomotion emerges from interaction of internal biological systems with the external environment. Although it is currently, or even generally, unrealistic to fully reduce this problem to first principles, it proves possible and useful to combine low-dimensional models of biological components with first-principle fluid dynamics models, for advancing our understanding of animal flight. In this talk, I will present flight experiments, numerical simulations and theoretical modelling of bumblebees. The experiments have been conducted in a free-flight channel connecting a bumblebee hive with a foraging chamber. Video recordings of hovering, forward flight and maneuvering have been acquired and analyzed to reconstruct the three-dimensional body motion and wing kinematics. The numerical simulations using FluSI, a pseudo-spectral Navier-Stokes solver with volume penalization, have allowed to assess the aerodynamic performance and the role of passive wing rotation. The theoretical analysis has brought new insights in the function and the dynamics of leading-edge vortices, and this topic will close the talk.
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
