| Full text | |
| Author(s): |
Assi, Gustavo R. S.
Total Authors: 1
|
| Document type: | Journal article |
| Source: | JOURNAL OF FLUIDS AND STRUCTURES; v. 133, p. 14-pg., 2025-03-01. |
| Abstract | |
An experimental investigation performed at moderate Reynolds numbers was set to study how a pair of tandem cylinders can be excited into flow-induced vibrations by different interference mechanisms as a function of longitudinal spacings varying from 2 to 10 diameters. Results showed that the downstream cylinder could develop vortex-induced vibration (VIV) caused by its own vortex shedding, wake-induced vibration (WIV) caused by a developed wake formed in the gap, and gap-flow-switching. A combination of these mechanisms appeared for cases under close proximity. For a specific spacing of 3 diameters, the vibration of the downstream cylinder was able to synchronize the vortex shedding from the upstream, fixed body. We call this mechanism "retro lock-in" since the vortex-formation process of a bluff body was governed by the dynamics of another body located further downstream. (AU) | |
| FAPESP's process: | 11/00205-6 - Investigation of new methods for suppressing flow-induced vibrations of offshore structures |
| Grantee: | Gustavo Roque da Silva Assi |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 22/03698-8 - OTIC Offshore Technology Innovation Centre |
| Grantee: | Gustavo Roque da Silva Assi |
| Support Opportunities: | Research Grants - Applied Research Centers Program |