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Accueil du site > Séminaires > Archives séminaires > Séminaires 2015 > Séminaire MSC. Lundi 9 mars 2015. Benjamin Thiria (PMMH, ESPCI) : "Mécanismes aéro-élastiques du vol des insectes et leur application aux énergies renouvelables.".

Séminaire MSC. Lundi 9 mars 2015. Benjamin Thiria (PMMH, ESPCI) : "Mécanismes aéro-élastiques du vol des insectes et leur application aux énergies renouvelables."

Sauf mention contraire, les séminaires et les soutenances se déroulent à 11h30 en salle 454A du bâtiment Condorcet.


Benjamin Thiria, Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH) ESPCI

Mécanismes aéro-élastiques du vol des insectes et leur application aux énergies renouvelables.

Aero-elastic mechanisms of insect flight and their application for renewable energies.

Abstract : Saving energy and enhancing performance are secular preoccupations shared by both nature and human beings. In animal locomotion, flapping flyers or swimmers rely on the flexibility of their wings or body to passively increase their efficiency using an appropriate cycle of storing and releasing elastic energy. Despite the convergence of many observations pointing out this feature, the underlying mechanisms explaining how the elastic nature of the wings is related to propulsive efficiency remain unclear. Here we use an experiment with a self-propelled simplified insect model allowing to show how wing compliance governs the performance of flapping flyers.In contrast to what has been repeatedly suggested in the literature, we show that flapping flyers optimize their performance not by especially looking for resonance to achieve larger flapping amplitudes with less effort, but by tuning the temporal evolution of the wing shape to optimize the aerodynamics. In the second part of the talk, I will discuss the potential applications for wind energy.


Contact : Équipe séminaires / Seminar team - Published on / Publié le 16 janvier 2015


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