Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Wind and Structures Volume 37, Number 6, December 2023 , pages 461-471 DOI: https://doi.org/10.12989/was.2023.37.6.461 |
|
|
|
Structural integrity of a 2.5-MW spar-type floating offshore wind turbine under extreme environmental conditions |
||
Hanjong Kim, Jaehoon Lee, Changwan Han and Seonghun Park
|
||
| Abstract | ||
| The main objective of this study was to establish design guidelines for three key design variables (spar thickness, spar diameter, and total draft) by examining their impact on the stress distribution and resonant frequency of a 2.5-MW spar-type floating offshore wind turbine substructure under extreme marine conditions, such as during Typhoon Bolaven. The current findings revealed that the substructure experienced maximum stress at wave frequencies of either 0.199 Hz or 0.294 Hz, consistent with previously reported experimental findings. These results indicated that the novel simulation method proposed in this study, which simultaneously combines hydrodynamic diffraction analysis, computational dynamics analysis, and structural analysis, was successfully validated. It also demonstrated that our proposed simulation method precisely quantified the stress distribution of the substructure. The novel findings, which reveal that the maximum stress of the substructure increases with an increase in total draft and a decrease in spar thickness and spar diameter, offer valuable insights for optimizing the design of spar-type floating offshore wind turbine substructures operating in various harsh marine environments. | ||
| Key Words | ||
| 2.5MW spar-type substructure; extreme ocean conditions; floating offshore wind turbine; fluid-structure interaction; structural integrity | ||
| Address | ||
| Hanjong Kim and Seonghun Park:School of Mechanical Engineering, Pusan National University, Busan, Republic of Korea Jaehoon Lee:Korea Marine Equipment Research Institute, Busan, Republic of Korea Changwan Han:Korea Aerospace Industries, Gyeongsangnam-do, Republic of Korea | ||