Chinese Journal of Ship Research, Volume. 17, Issue 3, 153(2022)
Numerical study of vortex-induced vibrations of flexible riser under top oscillation excitation
Figures & Tables(10)
Fig. 2. Time series of modal weights of cross-flow displacements in different cases不同工况下立管的横流向位移 部分模态权重 的时间历程
Fig. 4. Time series of modal weights of in-line displacements in different cases不同工况下立管的顺流向位移部分模态权重的时间历程
Table 1. Main structural parameters of the riser
View tableView in ArticleTable 1. Main structural parameters of the riser
参数 数值 质量比m* 1.53 长度L/m 12 直径D/m 0.024 弯曲刚度EI/(N·m2) 10.5 顶张力Tt/N 500 一阶固有频率fn1/Hz 0.87 二阶固有频率fn2/Hz 1.74 三阶固有频率fn3/Hz 2.63 四阶固有频率fn4/Hz 3.53 五阶固有频率fn5/Hz 4.44
Table 2. Main variable parameters for simulation cases
View tableView in ArticleTable 2. Main variable parameters for simulation cases
工况 振荡幅值 A/m 振荡周期 Tw/s 最大约化 速度 ${U_{{\rm{r}} \cdot \max } }$ KC数 1 0.64 5.6 34 168 2 0.32 5.6 17 84 3 0.16 5.6 8.5 42
Tools
Get Citation
Copy Citation Text
Hao HU, Jianwei WU, Decheng WAN. Numerical study of vortex-induced vibrations of flexible riser under top oscillation excitation[J]. Chinese Journal of Ship Research, 2022, 17(3): 153
Paper Information
Category: Ship Design and Performance
Received: Jan. 21, 2021
Accepted: --
Published Online: Mar. 25, 2025
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20