VIM Model Test and Assessment on a Semi-Submersible Type Floater With Different Column Intervals
VIM Model Test and Assessment on a Semi-Submersible Type Floater With Different Column Intervals
复制标题
DOI：
10.1115/omae2016-54308
复制
发表时间：
2016-06
期刊：
影响因子：
--
通讯作者：
T. Fujiwara;T. Nimura;Kohei Shimozato;R. Matsui
中科院分区：
文献类型：
--
作者：
T. Fujiwara;T. Nimura;Kohei Shimozato;R. Matsui
半潜式海上浮式结构物有望在日本沿海和近海应用，以促进资源的开发和利用。由于系泊的海上浮式结构物可能会受到水流的影响，涡激运动（Vim）可能会导致浮式结构物的系泊缆疲劳损坏，因此应以适当的方式评估Vim效应。然而，半潜式浮式结构物上的Vim现象尚不清楚，对VIM现象的了解也不够充分，公开的研究文献较少，缺乏对该结构物的规范。本文首先介绍了几种大型半潜式海洋浮式结构物模型在较高雷诺数水流中的Vim测量试验结果，然后提出了一种可用于半潜式海洋浮式结构物设计阶段的VIM简化估算方法，版权所有© 2016 ASME
Semi-submersible type offshore floating structures are expected to be used in the Japanese coastal area and at sea off Japan for promoting resource exploitation and development in near future. As a moored offshore floating structure may be suffered from current, Vortex-induced Motion (VIM) effect should be assessed in an appropriate manner since the VIM may cause fatigue damage of the floating structure’s mooring lines. VIM phenomenon on semi-submersible type floating structures, however, is not clear, and its comprehension is insufficient since there are only small number of open research papers with lack specifications of the structures. Moreover, a standardized assessment method for the VIM on them has not ever been proposed.At first in this paper, the results of VIM measurement test using some large semi-submersible floating structure models in relatively high Reynolds number flow are presented, and afterwards simplified estimation method, that is useful in the design stage for a semi-submersible type offshore floating structure, is introduced as one trial.Copyright © 2016 by ASME