Wake-body resonance of long flexible structures is dominated by counterclockwise orbits.

نویسندگان

  • Rémi Bourguet
  • Yahya Modarres-Sadeghi
  • George E Karniadakis
  • Michael S Triantafyllou
چکیده

We identify a dominant mechanism in the interaction between a slender flexible structure undergoing free vibrations in sheared cross-flow and the vortices forming in its wake: energy is transferred from the fluid to the body under a resonance condition, defined as wake-body frequency synchronization close to a natural frequency of the structure; this condition occurs within a well-defined region of the span, which is dominated by counterclockwise, figure-eight orbits. Clockwise orbits are associated with damping fluid forces.

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عنوان ژورنال:
  • Physical review letters

دوره 107 13  شماره 

صفحات  -

تاریخ انتشار 2011