Transactions of Nanjing University of Aeronautics & Astronautics
Hydrodynamic Characteristics of New Floating Wind-Wave Energy Combined Power Generation Devices Under Typhoon-Wave-Current Coupling
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Abstract:
The South China Sea is rich in wind and wave energy resources， and the wind-wave combined power generation device is currently in the concept research and development stage. In recent years， extreme sea conditions such as super typhoons have frequently occurred， which poses a serious challenge to the safety of offshore floating platforms. In view of the lack of safety analysis of wind-wave combined power generation devices in extreme sea conditions at present， this paper takes the OC4-WEC combined with semi-submersible wind turbine （Semi-OC4） and the oscillating buoy wave energy converter as the research object， and establishes a mesoscale WRF-SWAN-FVCOM （W-S-F） real-time coupling platform based on the model coupling Toolkit （MCT） to analyze the spatial and temporal evolution of wind-wave-current in offshore wind farms during the whole process of super typhoon “Rammasun” transit. Combined with the medium/small scale nested method， the flow field characteristics of OC4-WEC platform are analyzed. The results show that the simulation accuracy of the established W-S-F platform for typhoon track is 42.51% higher than that of the single WRF model. Under the action of typhoon-wave-current， the heave motion amplitude of OC4-WEC platform is reduced by 38.1%， the surge motion amplitude is reduced by 26.7%， and the pitch motion amplitude is reduced by 23.4%.
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Project Supported:
This work was jointly funded by the National Key Research and Development Projects （No.2017YFE0132000）， the National Natural Science Foundation of China （Nos. 5211101879， 52078251， 52108456）， and the Natural Science Foundation of Jiangsu Province （Nos. BK20211518，BK20210309）.
Clc Number:
TN925
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