کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
510493 | 865768 | 2013 | 9 صفحه PDF | دانلود رایگان |

The mechanisms of phasing between the in-line and cross-flow vortex-induced vibrations of a cylindrical tensioned beam in non-uniform flow are studied by direct numerical simulation. Three types of responses are considered, mono-frequency, narrowband, and broadband multi-frequency vibrations; in all cases, in-line and cross-flow vibration components occurring with a frequency ratio of 2 are phase-locked within regions of wake-body synchronization. The in-line/cross-flow phase difference exhibits a persistent spanwise drift when vibration components present significant traveling-wave behavior; this drift depends linearly on the in-line/cross-flow wavenumber difference, controlled by the beam non-linear dispersion relation and also impacted by the effective added mass variability.
► Phasing of in-line and cross-flow vortex-induced vibrations of a tensioned beam is investigated.
► Three types of responses are considered: mono-frequency, narrowband and broadband multi-frequency.
► In-line and cross-flow vibration components are phase-locked under wake-body synchronization.
► In-line/cross-flow phase difference drifts along the span for components with strong traveling-wave behavior.
► Phase difference drift depends linearly on the in-line/cross-flow wavenumber difference.
Journal: Computers & Structures - Volume 122, June 2013, Pages 155–163