摘要
文章基于物理模型试验,对张力腿平台的涡激运动问题进行了探讨,研究了横向和顺流向涡激运动频率及响应特性。试验结果表明:在锁定区,涡激运动频率与平台在海流中的位置有关。当结构沿流向对称时,顺流向振荡频率是横向振荡频率的两倍;当结构沿流向不对称时,顺流向振荡频率与横向振荡频率相同。试验结果还表明,流向角是影响平台运动轨迹的关键因素,当流向角为0°和45°时,平台运动轨迹呈不规则"8"字形;15°和30°时,运动轨迹为"香蕉形"。
Inline and transverse vortex induced motions(VIM) of tension leg platform(TLP) were studied based on the VIM experiment. The vibration characteristics and frequency relationship of VIM of TLP were also investigated. The results show that the frequency of VIM is related to the location of the structure in the current in lock-in region. When the structure shape is symmetric along inline direction, the frequency of inline vibration is twice of that in transverse. While the structure shape is asymmetric along inline direction, the frequency of inline vibration is equal to that in transverse. The results also reveal that the current incidences is the key factor influencing the motion trace. The moving trace has the irregular ‘8-shaped’ track under 0° and 45° incidences, while in 15° and 30° incidences, it has the ‘banana-shaped’.
作者
李磊
黄维平
常爽
张兆德
谢永和
LI Lei;HUANG Wei-ping;CHANG Shuang;ZHANG Zhao-de;XIE Yong-he(Shandong Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China;School of Naval Architecture and Mechanical-electrical Engineering,Zhejiang Ocean University,Zhoushan 316022,China)
出处
《船舶力学》
EI
CSCD
北大核心
2019年第5期541-547,共7页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51179179
51679217)
浙江省自然科学基金资助项目(LY19E090002
LY19E090003)
海洋工程国家重点实验室(上海交通大学)开放课题项目(1603)
浙江海洋大学人才引进科研基金项目
关键词
张力腿平台
涡激运动
模型试验
振荡频率
tension leg platform
vortex induced motion
model test
oscillation frequency
