Numerical Analysis of a Catenary Mooring System Attached by Clump Masses for Improving the Wave-Resistance Ability of a Spar Buoy-Type Floating Offshore Wind Turbine
| Autor: | Yuangang Tu, Wei Wang, Zhenqing Liu, Guo-Wei Qian |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
020209 energy
02 engineering and technology 010501 environmental sciences 01 natural sciences Turbine lcsh:Technology lcsh:Chemistry clump masses Spar buoy Catenary 0202 electrical engineering electronic engineering information engineering General Materials Science coupled dynamics Surge Instrumentation lcsh:QH301-705.5 0105 earth and related environmental sciences Fluid Flow and Transfer Processes lcsh:T Process Chemistry and Technology Numerical analysis Mooring system offshore wind turbine General Engineering lcsh:QC1-999 Computer Science Applications Offshore wind power lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Submarine pipeline OC3-Hywind spar lcsh:Engineering (General). Civil engineering (General) Geology lcsh:Physics Marine engineering |
| Zdroj: | Applied Sciences, Vol 9, Iss 6, p 1075 (2019) Applied Sciences Volume 9 Issue 6 |
| ISSN: | 2076-3417 |
| Popis: | The International Energy Agency (IEA), under the auspices of their Offshore Code Comparison Collaboration (OC3) initiative, has completed high-level design OC-3 Hywind system. In this system the wind turbine is supported by a spar buoy platform, showing good wave-resistance performance. However, there are still large values in the motion of surge degree of freedom (DOF). Addition of clump masses on the mooring lines is an effective way of reducing the surge motion. However, the optimization of the locations where the clump masses are added is still not clear. In this study, therefore, an in-house developed code is verified by comparing the results of the original OC3 model with those by FAST. The improvement of the performance of this modified platform as a function of the location of the clump masses has been examined under three regular waves and three irregular waves. In the findings of these examination, it was apparent that attaching clump masses with only one-tenth of the mass of the total mooring-line effectively reduces the wave-induced response. Moreover, there is an obvious improvement as the depth of the location where the clump masses mounted is increased. |
| Databáze: | OpenAIRE |
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