title: Rotational intermittency and turbulence induced lift experienced by large particles in a turbulent flow.
abstract: The motion of a large, neutrally buoyant, particle freely advected by a turbulent flow is determined experimentally. We demonstrate that both the translational and angular accelerations exhibit very wide probability distributions, a manifestation of intermittency. The orientation of the angular velocity with respect to the trajectory, as well as the translational acceleration conditioned on the spinning velocity, provides evidence of a lift force acting on the particle.
authors.affiliation: Laboratoire de Physique de l'École Normale Supérieure de Lyon, UMR5672, CNRS and Université de Lyon, 46 Allée d'Italie, 69007 Lyon, France.
authors.forename: Robert
authors.initials: R
authors.lastname: Zimmermann
authors.forename: Yoann
authors.initials: Y
authors.lastname: Gasteuil
authors.forename: Mickael
authors.initials: M
authors.lastname: Bourgoin
authors.forename: Romain
authors.initials: R
authors.lastname: Volk
authors.forename: Alain
authors.initials: A
authors.lastname: Pumir
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Pinton