Fluttering instabilities of cylinder in a Hele Shaw cell

ORAL

Abstract

We found that a cylinder confined between two parallel plates displays a fluttering instabilities. The cylinder oscillates with respect to the horizontal. The characteristics of the instability (frequency, amplitude...) are found to be function of the Froude number. Compared to previous studies, this instability is triggered by the confinement and not by inertial effects.

*LIA PMF

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Authors

  • Harold AURADOU

    • Lab. FAST
    • Fluide Automatique et Syst\`emes Thermiques (FAST), Paris Sud University, 91405 Orsay Cedex, France
    • Lab FAST, Univ Paris-Sud, CNRS

  • Jean-Pierre Hulin

    • Lab. FAST (CNRS/U-Psud)

  • Benoît Semin

    • Ecole Normale Sup\'erieure, LPS, CNRS, Paris, France
    • LPS ENS

  • Mario Cachile

    • GMP (FI-UBA)

  • Maria Veronica D'Angelo

    • GMP (FI-UBA)