Blar i Institutt for marin teknikk på forfatter "Kim, Sangwoo"
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Data-Driven Prediction of Vortex-Induced Vibration Response of Marine Risers Subjected to Three-Dimensional Current
Riemer-Sørensen, Signe; Wu, Jie; Lie, Halvor; Sævik, Svein; Kim, Sangwoo (Chapter, 2019)Slender marine structures such as deep-water marine risers are subjected to currents and will normally experience Vortex Induced Vibrations (VIV), which can cause fast accumulation of fatigue damage. The ocean current is ... -
Non-Linear Time Domain Analysis of Deepwater Riser Vortex-Induced Vibrations
Kim, Sangwoo (Doctoral theses at NTNU;2022:178, Doctoral thesis, 2022)Fatigue analysis of marine risers due to vortex-induced vibrations (VIV) is normally based on semi-empirical frequency domain methods which only allow for linear structural models, excluding non-linear effects (e.g., tension ... -
Prediction of deepwater riser VIV with an improved time domain model including non-linear structural behavior
Kim, Sangwoo; Sævik, Svein; Wu, Jie; Leira, Bernt Johan (Peer reviewed; Journal article, 2021)In this paper, vortex-induced vibrations (VIV) of deepwater risers including the VIV-induced tension fluctuations were simulated using a time domain VIV model. Data from a large-scale riser experiment was applied for ... -
Simulating High-Mode Vortex-Induced Vibration of a Riser in Linearly Sheared Current Using an Empirical Time-Domain Model
Kim, Sangwoo; Sævik, Svein; Wu, Jie; Leira, Bernt Johan (Peer reviewed; Journal article, 2021)As the development of offshore oil and gas continues to move into deeper waters, the risers connecting the seabed infrastructure to the offshore platform are getting longer. This means that vortex-induced vibration (VIV) ... -
Time domain simulation of marine riser vortex-induced vibrations in three-dimensional currents
Kim, Sangwoo; Sævik, Svein; Wu, Jie; Leira, Bernt Johan (Peer reviewed; Journal article, 2022)One of the major uncertainties related to present Vortex-Induced Vibrations (VIV) prediction practice is related to the simplification of real multi-directional current profiles into equivalent uni-directional ones. This ...