摘要
在工程中广泛应用的Truss Spar平台自诞生之初就为涡激运动问题所困扰,对其运动特性及抑制方法的机理性研究始终都在进行。采用截断系泊系统水池模型试验对设计中的Truss Spar平台在均匀流中的涡激运动响应进行了研究,分析了有无侧板平台的运动轨迹以及不同速度及流向角来流对平台运动的平衡位置的影响。在影响平台涡激运动特性的重要因素中,选取折合速度及流向角分别加以研究,分析了幅值在锁定区间中的变化规律,验证了减涡侧板对涡激运动良好的抑制作用,并对"热点"问题进行了探讨。为进一步研究Spar平台的涡激运动特性奠定了基础。
The importance of studying the Vortex-Induced Motions（VIM） characteristics and suppression device is obvious because VIM threatens the security of the Truss Spars since they have been applied successfully as offshore structures.In this study,model tests were carried out at SKLOE using truncated mooring system to study the VIM of a Truss Spar under uniform current.The trajectories of Truss Spar surge and sway with and without strakes are studied.The effect of the current velocity on Truss Spar equilibrium position is observed from the test results.As the main effective parameters for the VIM performance of Truss Spars,reduced velocity and current heading are studied in this paper.The results show the VIM responses under different reduced velocities and the efficiency of the helical strakes,but without the ＂hot spots＂.Further research is under way.More tow tank model tests will be carried out in the future.
出处
《海洋工程》
CSCD
北大核心
2011年第4期14-20,共7页
The Ocean Engineering
基金
国家科技重大专项子课题资助项目(2008ZX05026-002-04)
中海油-上海交大深水工程技术研究中心课题资助项目
