Abstract
Fluid-structure interaction (FSI) is used in the study to predict the vortex-induced vibration (VIV) of a cylinder that is fitted with helical strakes. The aims is to predict the characteristic of VIV after the installation of helical strakes on a cylinder. Two-way coupling through commercial fluid and structural solvers is utilized to develop the simulation. Helical strakes of height, h = 0.10D and pitch, p = 10D is used together with cylinder of diameter, D = 0.018 m. Three different velocities are tested. The amplitude, frequency, fluctuating lift response and vorticity contour are presented. The present study shows capability of FSI in reproducing the VIV characteristic of cylinder fitted with helical strakes. However, improvement is required especially at low reduced velocity as the values are deviated.
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