![]() ![]() Moreover, it was suitable for VIV analysis purposes. From the obtained comparison results of VIV analysis, it was demonstrated that a model with a single line model ending at the lower flex joint (LFJ) and pinned connection with finite rotation stiffness to simulate the LFJ properties at the bottom end of the line model produced acceptable prediction. ![]() The selected riser model was used to perform parametric studies to investigate the effects of design parameters on the VIV fatigue damage of TTR. ![]() To prepare the base model of TTR for parametric studies, three (3) riser modelling techniques in the OrcaFlex were investigated and validated against a reference model by Knardahl (2012). The effects of principal design parameters, i.e., riser diameter, wall thickness, water depth (related to riser length), top tension, current velocity, and shear rate (or shear profile of current) are investigated. This study aims to provide useful information on the fatigue assessment of a top-tensioned riser (TTR) subjected to vortex-induced vibration (VIV) by performing parametric study. Do Kyun Kim, Eileen Wee Chin Wong and Mala Konda Reddy Lekkala ![]()
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