渦放出による浮体－係留系の連成応答評価技術の開発

涡脱落浮体与系泊系统耦合响应评估技术开发

• 批准号: 18F18355
• 负责人: トレンティンゴンカルヴス ロドルフォ
• 金额: $ 1.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-11-09 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18355/
• 关键词: flow-induced motions; vortex-induced motions; galloping; FOWT; multi-column platforms; model tests; 浮体式洋上風車; 渦励起運動; Vortex Induced Motion; コラム; ポンツーン

FIM (flow-induced motions) phenomenon was investigated experimentally around multi-column FOWT (floating offshore wind turbines). Different geometries were studied as spacing ratio and column section shape.The results showed the best configurations to avoid the low frequency and high amplitudes of the motions due to the flow around the system. Two main mechanisms were observed: VIM (vortex-induced motions) due to the vortex shedding and resonance; and galloping due to the instability phenomenon caused by the asymmetric incidence of the flow.From these results, it is possible to propose the best geometry regarding the FIM amplitudes and also investigate new suppression devices to mitigate the FIM.The experimental results were compared with CFD calculations. The comparison showed a good agreement between them. Therefore, it is possible to conclude that the CFD can be a useful tool for designing procedure.

对多柱漂浮式海上风力发电机的绕流现象进行了实验研究。研究了不同的几何结构，如间距比和柱截面形状，结果表明，最佳的结构可以避免系统周围流动引起的低频和高振幅的运动。两个主要机制被观察到：Vim（涡激运动）由于涡脱落和共振;和驰振由于不稳定现象所造成的不对称的入射流。从这些结果，它是可能的，提出最佳的几何形状有关的振幅，也研究新的抑制装置，以减轻的湍流。实验结果与CFD计算进行了比较。比较结果表明，它们之间有很好的一致性。因此，可以得出结论，CFD可以是一个有用的工具，设计程序。

项目成果

FIM - flow-induced motions of three-column platforms

FIM - 三柱平台的流动引起的运动

• 发表时间: 2020
• 期刊: International Journal of Ocean and Polar Engineering
• 作者: R. T. Gonçalves;M. E. F. Chame;N. H. Hannes;P. P. S. P. Lopes;S. Hirabayashi and H. Suzuki
• 通讯作者: S. Hirabayashi and H. Suzuki

Experimental study on vortex-induced motions of floating circular single cylinders with low aspect ratio and different heave plate geometries

低展弦比和不同垂荡板几何形状的浮动圆形单圆柱体涡激运动实验研究

• 发表时间: 2020
• 作者: Goncalves;Rodolfo T.
• 通讯作者: Rodolfo T.

CFD evaluation and experimental comparison on the flow around fixed multi-column configurations

• DOI: 10.1007/s40868-019-00066-z
• 发表时间: 2019-10
• 期刊: Marine Systems & Ocean Technology
• 作者: P. Lopes;G. Rosetti;N. H. Hannes;M. Chame;S. Hirabayashi;Hideyuki Suzuki;Rodolfo T. Gonçalves

Spoiler plate effects on the suppression of vortex-induced motions of a single circular cylinder

• DOI: 10.1016/j.oceaneng.2020.107569
• 发表时间: 2020-08
• 期刊: Ocean Engineering
• 影响因子: 5
• 作者: V. Bianchi;L. S. Silva;F. Cenci;S. Hirabayashi;Hideyuki Suzuki;Rodolfo T. Gonçalves

Force Measurements of the Flow Around Arrays of Three and Four Columns With Different Geometry Sections, Spacing Ratios, and Incidence Angles

• DOI: 10.1115/1.4045212
• 发表时间: 2020-04
• 期刊: Journal of Offshore Mechanics and Arctic Engineering-transactions of The Asme
• 影响因子: 1.6
• 作者: Rodolfo T. Gonçalves;S. Hirabayashi;G. Vaz;Hideyuki Suzuki