An experimental and numerical study on dynamics of flexible free hanging riser

Y. P. Hong, Masahiko Nakamura, Wataru Koterayama, H. Osawa

研究成果: 会議への寄与タイプ論文

抄録

In this study, experimental and numerical investigations on dynamics of flexible free hanging riser are presented. Two riser models made of polyethylene and Teflon (PTFE) of different size are used for the experiments, in which models are forced to oscillate at the top end. For three-dimensional motion measurement, twelve CCD cameras are used to measure horizontal- and vertical- motions of the model along the longitudinal axis; six for in-line motion and six for transverse motion. The top end of the riser models is oscillated horizontally in a sinusoidal mode in still water. The largest response amplitude of vortex-induced vibration is induced at the bottom part of the model for all excitation frequencies and amplitudes. A numerical simulation method for dynamics of vertical risers is developed. The equations of motion of riser are derived based on Hamilton's principle. Galerkin method and Newmark-β method are employed for integration of the equation of motion in space and time, respectively. The results of the numerical simulation are validated by comparing with experimental results and showed a good agreement.

元の言語英語
出版物ステータス出版済み - 12 1 2002
イベントProceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium - Daejeon, 大韓民国
継続期間: 11 17 200211 20 2002

その他

その他Proceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium
大韓民国
Daejeon
期間11/17/0211/20/02

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riser
Polytetrafluoroethylenes
Equations of motion
Galerkin method
Computer simulation
Galerkin methods
CCD cameras
simulation
vortex
Polyethylenes
vibration
Vortex flow
experimental study
Water
experiment
Experiments
water
method

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

これを引用

Hong, Y. P., Nakamura, M., Koterayama, W., & Osawa, H. (2002). An experimental and numerical study on dynamics of flexible free hanging riser. 論文発表場所 Proceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium, Daejeon, 大韓民国.

An experimental and numerical study on dynamics of flexible free hanging riser. / Hong, Y. P.; Nakamura, Masahiko; Koterayama, Wataru; Osawa, H.

2002. 論文発表場所 Proceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium, Daejeon, 大韓民国.

研究成果: 会議への寄与タイプ論文

Hong, YP, Nakamura, M, Koterayama, W & Osawa, H 2002, 'An experimental and numerical study on dynamics of flexible free hanging riser' 論文発表場所 Proceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium, Daejeon, 大韓民国, 11/17/02 - 11/20/02, .
Hong YP, Nakamura M, Koterayama W, Osawa H. An experimental and numerical study on dynamics of flexible free hanging riser. 2002. 論文発表場所 Proceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium, Daejeon, 大韓民国.
Hong, Y. P. ; Nakamura, Masahiko ; Koterayama, Wataru ; Osawa, H. / An experimental and numerical study on dynamics of flexible free hanging riser. 論文発表場所 Proceedings of the Fifth (2002) ISOPE Pacific/Asia Offshore Mechanics Symposium, Daejeon, 大韓民国.
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