Identification of Hydrodynamic Forces on a Flexible Pipe Near Plane Boundary Subjected to Vortex-Induced Vibrations

Formally, use of system identification techniques to estimate the forces acting on the beam may give information on hydrodynamic forces due to vortex-induced vibrations （VIVs）, but no results from such attempts for submarine pipeline spans have been reported. In this study, a pipe model with a mass...

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Bibliographic Details
Published inShanghai jiao tong da xue xue bao Vol. 18; no. 1; pp. 44 - 53
Main Author 李小超 王永学 王国玉 蒋梅荣 何旭
Format Journal Article
LanguageEnglish
Published Heidelberg Shanghai Jiaotong University Press 01.02.2013
Subjects
Architecture
Computer Science
Electrical Engineering
Engineering
Life Sciences
Materials Science
海洋学
深海工程
观测
调查
pipe near plane boundary
pipeline span
force identification
vortex-induced vibration (VIV)
P 751
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Summary:Formally, use of system identification techniques to estimate the forces acting on the beam may give information on hydrodynamic forces due to vortex-induced vibrations （VIVs）, but no results from such attempts for submarine pipeline spans have been reported. In this study, a pipe model with a mass ratio （mass/displaced mass） of 2.62 is tested in a current tank. The gap ratios （gap to pipe diameter ratio） at the pipe ends are 2.0, 4.0, 6.0 and 8.0. The response of the model is measured using optical fiber strain gauges. A modal approach linked to a finite element method is used to estimate the hydrodynamic forces from measurement. The hydrodynamic force at the dominant response frequency is the major concern, and the lift force and added mass coefficients are calculated. Response calculations are performed using force coefficients from the inverse force analysis and the calculated results are in accordance with the experimental data.
Bibliography:Formally, use of system identification techniques to estimate the forces acting on the beam may give information on hydrodynamic forces due to vortex-induced vibrations （VIVs）, but no results from such attempts for submarine pipeline spans have been reported. In this study, a pipe model with a mass ratio （mass/displaced mass） of 2.62 is tested in a current tank. The gap ratios （gap to pipe diameter ratio） at the pipe ends are 2.0, 4.0, 6.0 and 8.0. The response of the model is measured using optical fiber strain gauges. A modal approach linked to a finite element method is used to estimate the hydrodynamic forces from measurement. The hydrodynamic force at the dominant response frequency is the major concern, and the lift force and added mass coefficients are calculated. Response calculations are performed using force coefficients from the inverse force analysis and the calculated results are in accordance with the experimental data.
31-1943/U
vortex-induced vibration （VIV）, pipeline span, force identification, pipe near plane boundary
ISSN:1007-1172
1995-8188
DOI:10.1007/s12204-013-1367-4