TY - GEN
T1 - Numerical study of vortex-induced vibration of a flexible riser under offshore platform horizontal motion
AU - Zhang, Yuqi
AU - Wan, Decheng
AU - Hu, Changhong
N1 - Publisher Copyright:
© 2020 by the International Society of Offshore and Polar Engineers (ISOPE).
PY - 2020
Y1 - 2020
N2 - In this paper, numerical simulation of a flexible riser is carried out at first. Results are compared with the model test to verify the validity of the solver. Then, cases with different KC number with the same motion amplitudes are simulated to explain the effect of KC number in the VIV of the riser in the oscillatory flow. Typical characteristics of the vibration are observed including the modal transition and the “build-up-lock-in-die-out” process. Finally, through wavelet analysis, it was found that the main control modes at different positions were in three states when KC number was 84 and 168.
AB - In this paper, numerical simulation of a flexible riser is carried out at first. Results are compared with the model test to verify the validity of the solver. Then, cases with different KC number with the same motion amplitudes are simulated to explain the effect of KC number in the VIV of the riser in the oscillatory flow. Typical characteristics of the vibration are observed including the modal transition and the “build-up-lock-in-die-out” process. Finally, through wavelet analysis, it was found that the main control modes at different positions were in three states when KC number was 84 and 168.
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M3 - Conference contribution
AN - SCOPUS:85090883293
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 2555
EP - 2562
BT - 30th International Ocean and Polar Engineering Conference
PB - International Society of Offshore and Polar Engineers
T2 - 30th International Ocean and Polar Engineering Conference, ISOPE 2020
Y2 - 11 October 2020 through 16 October 2020
ER -