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.

围绕多柱 FOWT（浮动式海上风力涡轮机）对 FIM（流致运动）现象进行了实验研究。研究了不同的几何形状，如间距比和柱截面形状。结果显示了最佳配置，以避免由于系统周围的流动而导致运动的低频和高振幅。观察到两个主要机制：由于涡流脱落和共振而产生 VIM（涡流诱发运动）；以及由于流动的不对称入射引起的不稳定现象引起的舞动。根据这些结果，可以提出关于 FIM 振幅的最佳几何形状，并研究新的抑制装置来减轻 FIM。实验结果与 CFD 进行了比较计算。比较表明它们之间具有良好的一致性。因此，可以得出结论，CFD 可以成为设计程序的有用工具。

项目成果

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.

Force measurements of the flow around arrays of three and four columns with different geometry sections, spacing ratios, and incidence angles

对具有不同几何截面、间距比和入射角的三柱和四柱阵列周围的流动进行力测量

• 发表时间: 2020
• 作者: R. T. Gonçalves; S. Hirabayashi; G. Vaz;H. Suzuki
• 通讯作者: H. Suzuki

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

固定多柱配置周围流动的 CFD 评估和实验比较

• 发表时间: 2019
• 作者: P. P. S. P. Lopes; G. F. Rosetti; N. H. Hannes; M. E. F. Chame; S. Hirabayashi; H. Suzuki;R. T. Gonçalves
• 通讯作者: alves

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

扰流板对单个圆柱体涡激运动抑制的影响

• DOI: 10.1016/j.oceaneng.2020.107569
• 发表时间: 2020
• 影响因子: 5
• 作者: Bianchi Valerio;Silva Le;ro S.P.;Cenci Fredi;Hirabayashi Shinichiro;Suzuki Hideyuki;Goncalves Rodolfo T.
• 通讯作者: Goncalves Rodolfo T.

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
• 作者: R. T. Gonçalves; M. E. F. Chame; N. H. Hannes; P. P. S. P. Lopes; S. Hirabayashi;H. Suzuki
• 通讯作者: H. Suzuki