Wake-body Resonance of Long Flexible Structures is Dominated by Counterclockwise Orbits
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Bourguer-2011-Letters-Wake-body Resonance of Long Flexible Structures.pdf
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Author(s)
Modarres-Sadeghi, Yahya
Karniadakis, George E.
Bourguet, Remi
Triantafyllou, Michael S.
Date Issued
September 2011
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Bourguet, Rémi et al. “Wake-body Resonance of Long Flexible Structures is Dominated by Counterclockwise Orbits.” Physical Review Letters 107.13 (2011): n. pag. Web. 27 Jan. 2012. © 2011 American Physical Society
Version
Final published version
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.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.107.134502
