TY - JOUR
T1 - Experimental and numerical study of a barge-type floating offshore wind turbine under a mooring line failure
AU - Tang, Hung Jie
AU - Yao, Hao Cheng
AU - Yang, Ray Yeng
N1 - Funding Information:
The authors are grateful for the support of the National Science and Technology Council of Taiwan , grant number: 109-2222-E-006-003-MY2 and 111-2218-E-019-001 .
Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/6/15
Y1 - 2023/6/15
N2 - This study investigated the transient response due to a mooring line failure on a barge-type floating offshore wind turbine (FOWT). A 1/64 scale model of the FOWT with eight catenary mooring lines was installed in a wave tank to be separately subjected to wind, wave, and current loads. An electromagnet attached to the fairlead of the FOWT was used to disconnect the mooring lines. First, free decay test was performed to ensure the suitability of the scaled model. Then, the individual contributions of wind, wave, and current loads were compared based on the 50-year return period to investigate their influences on the movement of the FOWT after failure. The results showed that the wave effect was the most important factor, followed by current and wind. Then, the mooring loads and rigid body motions of the FOWT under mooring line failure in wind, current, and wave conditions were investigated. Finally, two commercial codes (ANSYS AQWA and OrcaFlex) were used to compare the experimental results in waves. The comparison findings showed that the potential flow-based numerical model overestimates the dynamic response. This result implies the significant damping effect of the barge-type FOWT.
AB - This study investigated the transient response due to a mooring line failure on a barge-type floating offshore wind turbine (FOWT). A 1/64 scale model of the FOWT with eight catenary mooring lines was installed in a wave tank to be separately subjected to wind, wave, and current loads. An electromagnet attached to the fairlead of the FOWT was used to disconnect the mooring lines. First, free decay test was performed to ensure the suitability of the scaled model. Then, the individual contributions of wind, wave, and current loads were compared based on the 50-year return period to investigate their influences on the movement of the FOWT after failure. The results showed that the wave effect was the most important factor, followed by current and wind. Then, the mooring loads and rigid body motions of the FOWT under mooring line failure in wind, current, and wave conditions were investigated. Finally, two commercial codes (ANSYS AQWA and OrcaFlex) were used to compare the experimental results in waves. The comparison findings showed that the potential flow-based numerical model overestimates the dynamic response. This result implies the significant damping effect of the barge-type FOWT.
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U2 - 10.1016/j.oceaneng.2023.114411
DO - 10.1016/j.oceaneng.2023.114411
M3 - Article
AN - SCOPUS:85151695642
SN - 0029-8018
VL - 278
JO - Ocean Engineering
JF - Ocean Engineering
M1 - 114411
ER -