Suppression of Vortex-Induced Vibration of a Cylinder Fitted with Free-to-Rotate Parallel and Oblique Plates

Autor(es)

Assi, G. R. S. ; Franco, G. S. ; Vestri, M. S. ; Theofilis, V ; Soria, J

• Tipo de documento: Artigo Científico
• Fonte: INSTABILITY AND CONTROL OF MASSIVELY SEPARATED FLOWS; v. 107, p. 6-pg., 2015-01-01.

Resumo

Experiments have been carried out on models of free-to-rotate parallel and oblique plates fitted to a rigid section of circular cylinder to investigate the effect of plate length and oblique angle on the stability of this type of VIV suppressor. Measurements of the dynamic response by trajectories of motion are presented for models with low mass and damping, free to respond in the cross-flow and streamwise directions. It is shown that, depending on a combination of geometric parameters devices might not be able to completely suppress VIV for the whole range of reduced velocities investigated. Plates with larger oblique angles turned to be less stable than parallel plates and induced high-amplitude vibrations for some specific reduced velocities. (AU)

• Processo FAPESP: 11/00205-6 - Desenvolvimento de métodos de supressão de vibrações induzidas pelo escoamento em estruturas oceânicas
• Beneficiário: Gustavo Roque da Silva Assi
• Modalidade de apoio: Auxílio à Pesquisa - Regular