Impact figures

Wednesday, December 9, 2009 - 9:00am - 9:40am
EE/CS 3-180
David Quéré (École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI))
Since Worthington, many situations generated by impacts in liquids were
documented and explored. In this spirit, we would like to present several
recent observations related to the behavior of projectiles after they hit
different kinds of liquids. We first discuss the impact on soap films, and
naturally extend these observations to foams, focussing on the ability of
such complex fluids to absorb the kinetic energy of the projectiles. We
also consider impacts in a viscous liquid, and describe the particular
kind of cavity generated by the shock. And we conclude by looking at the
behaviour of revolving projectiles, discussing the characteristics of the
trajectory induced by the rotation.

Other contributors to this talk: Anne Le Goff, Guillaume Dupeux and
Christophe Clanet.
MSC Code: