TY - GEN
T1 - Numerical analysis of vortex-induced vibrations of a slender flexible riser under platform motions
AU - Hu, Hao
AU - Deng, Di
AU - Wan, Decheng
AU - Hu, Changhong
N1 - Publisher Copyright:
© 2021 by the International Society of Offshore and Polar Engineers (ISOPE).
PY - 2021
Y1 - 2021
N2 - With influence of current, the platform and the connected riser form relative motion in the flow. In this paper, A computational fluid dynamics (CFD) model is built by strip theory and Bernoulli–Euler bending beam model. Based on this numerical model, the platform motions and corresponding current velocities are employed to investigate the responses of the riser. The numerical results indicate that the dominant crossflow and inline vibration modes are increased with the current velocity. The amplitudes of crossflow and inline vibration modes show periodic variations with the increase in the amplitude of the surge motion and the current velocity. The similar vortex shedding mode in the uniform flow is observed during vortex-induced vibrations of riser under the low frequency platform motions.
AB - With influence of current, the platform and the connected riser form relative motion in the flow. In this paper, A computational fluid dynamics (CFD) model is built by strip theory and Bernoulli–Euler bending beam model. Based on this numerical model, the platform motions and corresponding current velocities are employed to investigate the responses of the riser. The numerical results indicate that the dominant crossflow and inline vibration modes are increased with the current velocity. The amplitudes of crossflow and inline vibration modes show periodic variations with the increase in the amplitude of the surge motion and the current velocity. The similar vortex shedding mode in the uniform flow is observed during vortex-induced vibrations of riser under the low frequency platform motions.
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M3 - Conference contribution
AN - SCOPUS:85115269911
SN - 9781880653821
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 2015
EP - 2020
BT - Proceedings of the 31st International Ocean and Polar Engineering Conference, ISOPE 2021
PB - International Society of Offshore and Polar Engineers
T2 - 31st International Ocean and Polar Engineering Conference, ISOPE 2021
Y2 - 20 June 2021 through 25 June 2021
ER -