Vortex-induced vibration characteristics of a low-mass-ratio flexible cylinder

Vortex-induced vibration characteristics of a low-mass-ratio flexible cylinder

A laboratory experiment is conducted is to investigate the behaviour of a low-mass-ratio and high aspect ratio flexible cylinder under vortex-induced vibration (VIV). A flexible cylinder with aspect ratio of 100 and mass ratio of 1.17 is towed horizontally to generate uniform flow profile. The range...

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Bibliographic Details
Published in:Structural engineering and mechanics pp. 621 - 631
Main Authors: Lee Kee Quen, Aminudin Abu, Naomi Kato, Pauziah Muhamad, Kang Hooi Siang, Lim Meng Hee, Mohd Asamudin A Rahman
Format: Journal Article
Language:English
Published: 국제구조공학회 10-09-2020
Subjects:
토목공학
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Summary:A laboratory experiment is conducted is to investigate the behaviour of a low-mass-ratio and high aspect ratio flexible cylinder under vortex-induced vibration (VIV). A flexible cylinder with aspect ratio of 100 and mass ratio of 1.17 is towed horizontally to generate uniform flow profile. The range of Reynolds number is from 1380 to 13800. Vibration amplitude, in-line and cross-flow frequency response, amplitude trajectory, mean tension variation and hydrodynamic force coefficients are analyzed based on the measurement from strain gauges, load cell and CCD camera. Experimental results indicate that broad-banded lock-in region is found for the cylinder with a small Strouhal number. The frequency switches in the present study indicates the change of the VIV phenomenon. The hydrodynamic force responses provide more understanding on the VIV of a low mass ratio cylinder. KCI Citation Count: 0
ISSN:1225-4568
DOI:10.12989/sem.2020.75.5.621