成果報告書詳細
管理番号20150000000250
タイトル*平成26年度中間年報 海洋エネルギー技術研究開発 次世代海洋エネルギー発電技術研究開発 着定式潮流発電
公開日2015/9/1
報告書年度2014 - 2014
委託先名川崎重工業株式会社 国立大学法人九州大学
プロジェクト番号P07015
部署名新エネルギー部
和文要約
英文要約As a part of the development of our tidal power generation system, four items below have been proceeded this fiscal year. (1)Technical development of lightweight nacelle, (2)Technical development of large blade, (3)Technical development of sealing system. (4) Development of CFD method based on OpenFOAM.
(1)Technical development of lightweight nacelle
To ease the difficulty of installation work of our tidal turbines, it is important to reduce the weight of the nacelle. For this purpose, a design in which the converters and the electrical transformers are placed on the land was considered. As a result, it was confirmed that the design could be realized by employing a high-voltage generator. However, in this design, there was a problem that the generator had to be controlled from long distant place(2km). For this problem , we could have some prospect for some solution.
(2)Technical development of large blade
To gain a sufficient amount of electrical power from Japanese sea in which tidal current is relatively slow, use of large blade is effective. In this fiscal year , two types of blade designs( 7.5m length blade and 10m length blade) were examined from the view point of blade shape, structural design and strength. It was confirmed that those blade designs could endure the load from the tidal flow in the sea.
(3)Technical development of sealing system
To evaluate the leakage rate of the seal and durability of the seal in real condition of the sea, a seal testing device was developed, and a few test was conducted to evaluate a basic performance of the seal which was selected for the tidal turbine. As a result, basic data such as leakage data, required torque for each of the seal was accumulated.
(4) Development of CFD method based on OpenFOAM.
To establish an effective CFD analytical procedure for numerical simulation of a tidal current farm, a 3-D CFD code based on OpenFOAM has been developed for predicting the force coefficients and characterizing the wake of a tidal turbine.
As to the wake measurement experiment, experimental setup has been designed and necessary apparatuses have been purchased or manufactured. The experiment will be carried out in the circulating channel of the Graduate School of Engineering, Kyushu University. The size of the measurement part of the channel is of 6m×2m×1m. The turbine model is of 0.5m diameter, which is being designed and will be made by using the 3-D printer of Research Institute for Applied Mechanics, Kyushu University.
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