Wake-body Resonance of Long Flexible Structures is Dominated by Counterclockwise Orbits

Rémi Bourguet, Yahya Modarres-Sadeghi, George E. Karniadakis, and Michael S. Triantafyllou
Phys. Rev. Lett. 107, 134502 – Published 23 September 2011

Abstract

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.

  • Figure
  • Figure
  • Received 7 June 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.134502

© 2011 American Physical Society

Authors & Affiliations

Rémi Bourguet1,*, Yahya Modarres-Sadeghi2, George E. Karniadakis3, and Michael S. Triantafyllou1

  • 1Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • 2University of Massachusetts, Amherst, Massachusetts 01003, USA
  • 3Brown University, Providence, Rhode Island 02912, USA

  • *bourguet@mit.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 107, Iss. 13 — 23 September 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×