期刊
JOURNAL OF MARINE SCIENCE AND ENGINEERING
卷 9, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/jmse9030345
关键词
extreme waves; offshore WEC; breaking focused waves; slamming loads; 50-years return period; OpenFOAM; overset mesh; CFD
资金
- Centre of Natural Hazards and Disaster Science, Sweden
- Swedish Research Council (VR) [2015-04657]
- Swedish Energy Authority [47264-1]
- Onassis Foundation [FZP 021-1/2019-2020]
- Swedish Research Council FORMAS [2018-01784]
- Centre of Natural Hazards and Disaster Science (CNDS)
This study evaluates the survivability of a point-absorbing wave energy converter at a selected site in the North Sea based on CFD simulations, focusing on forces on key components and system dynamics. The results contribute to understanding the device's response under extreme wave conditions, particularly in interactions with breaking waves, and provide important insights for design considerations.
This work evaluates the survivability of a point-absorbing wave energy converter at sea states along and inside the 50-year environmental contour for a selected-site in North Sea, by utilizing CFD simulations. Focused wave groups based on NewWave theory are used to model the extreme waves. The numerical breaking waves have been previously predicted by the analytical breaking criterion, showing that the latter provides an accurate estimate for the breaking state. The forces on key components of the device and the system's dynamics are studied and compared. Slamming loads are identified in the interaction with extreme waves, particularly with breaking waves, and compared with the analytical formulas for slamming estimation as suggested by industrial standards. Considering the extreme wave characteristics, the accompanied phenomena and the resulting WEC's response, this work contributes to the identification of the design-waves given the environmental contour of the selected site. The top-left side of the contour is identified as the more critical area as it consists of steep and high waves inducing significant nonlinear phenomena, resulting in high loads.
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