摘要
Vortex induced vibration (VIV) is a common fluid-structure interaction phenomenon in the field of marine engineering, which can cause fatigue damage or instability of marine structures. In order to suppress the VIV, a new scheme of longitudinal slats was proposed, and the influence of VIV on the marine risers with longitudinal slats was investigated with a transient computational fluid dynamics (CFD) method. Firstly, the distribution of longitudinal slats is defined; secondly, the Newmark- β method is used to solve the differential equation with two degrees of freedom and UDF for the CFD numerical calculation is compiled. k-ω/SST turbulence model and couple algorithm are used, and the vibration process of risers is simulated by using the dynamic mesh technique. The results show that the longitudinal slats have a remarkable effect on VIV suppression of marine risers. When the number of longitudinal slats is 20 (n=20), the streamwise vibration amplitude will be reduced by 78.57% and the transverse vibration amplitude by 58.10%. The results of the study can provide references for the VIV suppression of marine structures.
投稿的翻译标题 | Numerical investigation on VIV suppression of marine risers with longitudinal slats |
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源语言 | 繁体中文 |
页(从-至) | 79-87 |
页数 | 9 |
期刊 | Chuan Bo Li Xue/Journal of Ship Mechanics |
卷 | 24 |
期 | 1 |
DOI | |
出版状态 | 已出版 - 1 1月 2020 |
关键词
- Longitudinal slats
- Numerical investigation
- Two degrees of freedom
- Vibration suppression
- VIV