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

doi:10.1007/s12204-013-1367-4

上海交通大学学报（英文版） ›› 2013, Vol. 18 ›› Issue (1): 44-53.doi: 10.1007/s12204-013-1367-4

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

LI Xiao-chao1,2* (李小超), WANG Yong-xue3 (王永学), WANG Guo-yu3 (王国玉)，JIANG Mei-rong3 (蒋梅荣), HE Xu4 (何旭)

(1. School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410004, China; 2. Hunan Province Key Laboratory of Water, Sediment Sciences & Flood Hazard Prevention, Changsha University of Science & Technology, Changsha 410004, China; 3. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 4. Offshore Pipelines & Risers (OPR) Inc., Hangzhou 310000, China)

出版日期:2013-02-28 发布日期:2013-03-19
通讯作者: LI Xiao-chao1,2* (李小超) E-mail:lixchao@gmail.com

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

LI Xiao-chao1,2* (李小超), WANG Yong-xue3 (王永学), WANG Guo-yu3 (王国玉)，JIANG Mei-rong3 (蒋梅荣), HE Xu4 (何旭)

(1. School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410004, China; 2. Hunan Province Key Laboratory of Water, Sediment Sciences & Flood Hazard Prevention, Changsha University of Science & Technology, Changsha 410004, China; 3. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 4. Offshore Pipelines & Risers (OPR) Inc., Hangzhou 310000, China)

Online:2013-02-28 Published:2013-03-19
Contact: LI Xiao-chao1,2* (李小超) E-mail:lixchao@gmail.com

摘要/Abstract

摘要： 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.

关键词: vortex-induced vibration (VIV), pipeline span, force identification, pipe near plane boundary

Abstract: 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.

Key words: vortex-induced vibration (VIV), pipeline span, force identification, pipe near plane boundary

中图分类号:

P 751

LI Xiao-chao1,2* (李小超), WANG Yong-xue3 (王永学), WANG Guo-yu3 (王国玉)，JIANG Mei-rong3. Identification of Hydrodynamic Forces on a Flexible Pipe Near Plane Boundary Subjected to Vortex-Induced Vibrations[J]. 上海交通大学学报（英文版）, 2013, 18(1): 44-53.

LI Xiao-chao1,2* (李小超), WANG Yong-xue3 (王永学), WANG Guo-yu3 (王国玉)，JIANG Mei-rong3 (蒋梅荣), HE Xu4 (何旭). Identification of Hydrodynamic Forces on a Flexible Pipe Near Plane Boundary Subjected to Vortex-Induced Vibrations[J]. Journal of shanghai Jiaotong University (Science), 2013, 18(1): 44-53.

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

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

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