A Feasibility Study for Using Fishnet to Protect Offshore Wind Turbine Monopile Foundations from Damage by Scouring
| Autor: | Kexiang Wei, Li Tieying, Bo Qin, Liwei Ning, Wenxian Yang, Yang Bo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0208 environmental biotechnology
Shear force Flow (psychology) 020101 civil engineering 02 engineering and technology Turbine lcsh:Technology 0201 civil engineering lcsh:Chemistry Maximum depth General Materials Science fishnet Instrumentation lcsh:QH301-705.5 Seabed Fluid Flow and Transfer Processes scour lcsh:T Process Chemistry and Technology offshore wind turbine General Engineering Foundation (engineering) lcsh:QC1-999 020801 environmental engineering Computer Science Applications Offshore wind power lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Environmental science Reduction (mathematics) lcsh:Engineering (General). Civil engineering (General) lcsh:Physics Marine engineering monopile foundation |
| Zdroj: | Applied Sciences Volume 9 Issue 23 Applied Sciences, Vol 9, Iss 23, p 5023 (2019) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9235023 |
| Popis: | Offshore wind turbine monopile foundations are subjected to complex wind, wave, and flow coupling effects, which result in seabed scouring around the monopile. The consequent scour pits threaten the reliability, safety, and load-carrying capacity of the monopile. In order to develop a cost-effective measure to mitigate such an issue, a new countermeasure device, named &ldquo fishnet&rdquo is studied in this paper using a combined approach of numerical simulations and experimental tests. In the research, the size of the fishnet, diameter of the fishnet thread, and the installation height of the fishnet were optimized in order to achieve the best protection to the monopile foundation. In the paper, both numerical simulations and laboratory tests proved the effectiveness of the proposed &ldquo in reducing the scour around the wind turbine monopile foundations. Moreover, its contribution to erosion reduction can be further enhanced via optimization. It was found that, after optimization, the maximum shear force on the seabed could be reduced by 14% in the numerical study, and the maximum depth of the scour pit could be reduced by 38.2% in laboratory tests. |
| Databáze: | OpenAIRE |
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