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When structural damping enhances flow-induced vibrations
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DOI：10.1017/jfm.2026.11748.png)
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Abstract
En 中文
This work uncovers a counterintuitive effect of structural damping on vortex-induced vibrations (VIV). The influence of structural damping is examined numerically in the canonical problem usually considered to study these vibrations driven by flow-body synchronisation; i.e. a circular cylinder free to oscillate within a uniform cross-current; for Reynolds numbers up to that marks the onset of flow unsteadiness for a fixed body. The enhancement of VIV by structural damping is interpreted in light of the distribution of fluid–structure energy transfer in the amplitude–frequency domain. Such an enhancement is a counterintuitive but general phenomenon; which is shown to persist along curvilinear trajectories and when a structural restoring force is added to the system.
Keywords:
flow-structure interactions
vortex streets
wakes
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3.9
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2.0W
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9.4W
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