著者

鈴木 英之 柴田 創 藤岡 弘幸 平林 紳一郎 石井 希実子 菊池 紘樹

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本船舶海洋工学会論文集 (ISSN:18803717)

巻号頁・発行日

vol.18, pp.81-90, 2013

被引用文献数

3

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Rotor-floater-mooring coupled response analysis is essentially important for design of Rotor Nacelle Assembly (RNA) and floating support structure of Floating Offshore Wind Turbine (FOWT). The authors have developed an analysis code UTWind for the analysis of the coupled response. Blades and floater are modeled as frame structure with beam elements. Lumped mass model is use for mooring. Aerodynamic load on blade is calculated by Blade Element Momentum Theory (BEM), and hydrodynamic load is calculated by Hooft's method, and Morison equation was modified to be applicable to cylindrical element with cross section with two axes of line symmetry. The equations of motion of rotor, floater and mooring are solved in time domain by weak coupling algorithm.The numerical results by the code were compared with experimental results in wave and wind-wave coexisting condition with/without blade pitch control and showed good agreement. Response by negative damping was reproduced by the code and showed good agreement with experiments.