Experimental Evidence of the Effect of Permeability on Falling Porous Plates

  • Sánchez Rodríguez, Jesús (UNED)
  • Gallaire, François (EPFL)

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In this work, we study experimentally the dynamical regimes of falling permeable plates. Permeability and porosity are systematically varied by drilling several hole patterns, characterized by the spatial arrangement, number of holes and diameter of holes. We track the plates trajectories and classify the falling trajectories according to tumbling, fluttering, steady descent or change of orientation. We conclude the stabilizing effect of permeability observing that, even for low permeable plates, the tumbling behavior is totally suppressed.