Abstract
The phenomenon of lock-in in vortex-induced vibrations of bluff bodies is studied from a phenomenological model perspective. The theoretical investigation includes asymptotic deterministic and stochastic analyses which are compared with experimental measurements and Monte-Carlo simulations. It is shown that, for the considered parameter space, the model can possess only a single or multiple (co-existing) synchronized solutions, where the stable synchronized solution is hardly affected by the turbulence-induced random fluctuations far from the bifurcation points. These results provide a relatively simple connection between experimental measurements and the model predictions, and they confirm the validity of the phenomenological model for vortex-induced vibrations problems that involve a turbulent wake.
Original language | English |
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Pages (from-to) | 17-27 |
Number of pages | 11 |
Journal | Journal of Sound and Vibration |
Volume | 434 |
DOIs | |
State | Published - 10 Nov 2018 |
Keywords
- Fluid-structure interaction
- Lock-in phenomenon
- Vortex-induced vibration
- Wake-oscillator
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Acoustics and Ultrasonics
- Mechanical Engineering