文献类型： 会议论文

第一作者： Ji-ning Song

作者： Ji-ning Song ¹ ; Bin Teng ¹ ; Han-il Park ² ; Lin Lu ³ ; Guo-qiang Tang ¹ ; Hao Wu ¹ ; Jian-qiao Zhang ⁴ ;

作者机构： 1.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China

2.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China Department of Ocean Engineering, Korea Maritime University, Busan, Korea

3.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China Center for Deepwater Engineering, Dalian University of Technology, Dalian, China

4.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China Fishery Engineering Research Institute of Chinese Academy of Fishery Sciences, Beijing, China

关键词： experimental tests;vortex-induced vibration;long flexible riser;cross flow motion;in-line motion;high mode

会议名称： International offshore and polar engineering conference

主办单位：

页码： 1115-1120

摘要： This paper reports experimental tests on vortex-induced vibration (VIV) of a long flexible riser towed horizontally in a wave basin. The riser model has an external diameter of 16 mm and a total length of 28.04 m, giving an aspect ratio of about 1750. Reynolds numbers are within the range from 103 to 104. The mass ratio of the riser model is 1.0 Fiber optic grating strain gauges are used to measure the dynamic response of the model. The VIV response strain, vibration frequency and amplitude, displacement, and displacement standard deviation of the flexible riser model were examined in both cross-flow and in-line directions. The experimental results showed that the cross-flow dominant mode may reach up to 6 and the in-line dominant mode over 12 with dominant frequencies given by a Strouhal number of about 0.18. Higher harmonics such as the third, fourth and fifth vibration components were also observed.

分类号： P75