2023 Fiscal Year Research-status Report
Elucidation of the hydrodynamics in newly-arised innovative floating systems toward highly-efficient ocean renewable energy conversion
| Project/Area Number |
22K14430
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| Research Institution | Kyushu University |
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Principal Investigator |
劉 盈溢 九州大学, 応用力学研究所, 助教 (30799127)
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| Project Period (FY) |
2022-04-01 – 2025-03-31
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| Keywords | hybrid wind-wave energy / eigenfunction expansion / oscillating water column / perforated plate |
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| Outline of Annual Research Achievements |
Offshore hybrid wind-wave energy systems provide an efficient way of harnessing ocean renewable energy. In the present work, an eigenfunction expansion approach is developed to model wave interactions with a typical such system, in which an oscillating water column (OWC) device is attached at a monopile foundation of an offshore wind turbine. Numerical results show that installing a ring-shaped perforated plate to the shell of the OWC chamber can effectively mitigate the system's horizontal wave force and bending moment. The reduction of wave loads is particularly significant with a low plate's porosity.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The project has progressed smoothly, culminating in the development of the eigenfunction expansion approach for the hybrid ocean renewable energy system. Notably, significant physical findings have been published in the prestigious journal Physics of Fluids.
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| Strategy for Future Research Activity |
Further issues relating to the hydrodynamics of floating wind turbines or wave energy converters will be studied in the next year.
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| Causes of Carryover |
A part of budget will be moved to the next year for attending international or domestic conference.
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