ORCID
- S.A. Brown: 0000-0002-6858-3316
- M. Hann: 0000-0003-3965-9331
- D.M. Greaves: 0000-0003-3906-9630
Abstract
Determining ultimate loads and platform motions is essential for both survivability and cost-effectiveness in the development of floating offshore wind. Current design standards utilise time-consuming methodologies that rely on irregular sea state simulations to determine design loads. Design waves offer the potential to accelerate the design process through the simulation of shorter wave profiles that specifically target extreme responses. However, it is not well understood how reliable design waves are for floating devices. Using a mid-fidelity numerical tool, this paper explores the characteristic loads produced by four design wave methods for a semi-submersible floating wind device over a wide range of environmental conditions, using the traditional approach as a benchmark. The results show that for most sea states there is a design wave method that is at least as conservative as the traditional approach. Furthermore, single design waves can be used to identify extreme sea states for more detailed analysis, saving considerable time at the early design stage. Finally, if the most efficient design wave is used for each sea state, there is potential for significant speed up within the design process, but this will rely on being able to reliably identify the method in advance.
DOI Link
Publication Date
2025-06-01
Publication Title
Ocean Engineering
Volume
328
ISSN
0029-8018
Acceptance Date
2025-03-21
Deposit Date
2025-04-03
Funding
The authors acknowledge that this work was funded as part of the Engineering and Physical Sciences Research Council (EPSRC) project \u2018Supergen ORE Impact Hub 2023\u2019 [ EP/Y016297/1 ]. Additional support has been received through the EPSRC funded project \u2018High End Computing Consortium for Wave Structure Interaction (HEC-WSI)\u2019 [ EP/X035751/1 ], in the form of computational resource on the UK national supercomputing service (Archer2).
Additional Links
https://linkinghub.elsevier.com/retrieve/pii/S002980182500767X
Keywords
Design procedures, Most likely extreme response, NewWave, OpenFAST, Survivability, Ultimate loads
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Brown, S., Tosdevin, T., Hann, M., & Greaves, D. (2025) 'On the sensitivity of short design waves for semi-submersible wind platforms', Ocean Engineering, 328. Available at: 10.1016/j.oceaneng.2025.121054
