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Keywords: viv response
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Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-121
... responses due to vessel motion at the riser top end, but also cross-flow vortex-induced vibrations (VIV) under conditions when Keulegan—Carpenter number is relatively small. Cross-flow VIV response is estimated using the VIVANA software and compared to the measured response. The main conclusion is however...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-228
... was developed for predicting the VIV response based on various theoretical models and experiments. Parameters for VIV response calculation in this program were also determined through various experiments and experiences. For better understanding of VIV response, it is necessary to investigate the effect...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-484
.... The critical reduced velocity for onset of VIV is also examined. frequency diameter onset main pipe viv response vibration amplitude mass ratio position angle midstream oil & gas deviation balance position piping simulation piping design flow velocity viv displacement configuration...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-302
... rods, including 0°, 22.5° and 45°, are considered in this work. The experiments are carried out in a wave basin by means of towing tests, giving rise to the Reynolds numbers 1,400 < Re < 5,200. The VIV responses of riser model in both Cross- Flow (CF) and In-Line (IL) directions, together...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-411
... the range from 10 3 to 10 4 . The mass ratio of the riser model is 1.0 Fiber optic grating strain gauges are used to measure the dynamic response of the model. The VIV response strain, vibration frequency and amplitude, displacement, and displacement standard deviation of the flexible riser model were...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-158
... amplitude wake oscillator oscillator viv response coefficient scr interaction srinil natural frequency vibration ttr frequency nonlinearity multi-mode interaction nonlinear mode artificial intelligence curvature nonlinear multi-mode interaction Nonlinear Multi-mode Interactions...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-347
... A new nonlinear model of TLP's tendon is presented and its VIV response in effect of current load is simulated considering the hull's motions effects on boundary condition and tension of tendon. Different tensions are considered to affect the VIV response. The Morison equation is used to solve...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-325
... the riser arrangement, fabrication details, vessel layout, installation method, and thus have significant cost impacts at all stages of the field development. In-service monitoring or full scale testing is essential to improve our understanding of VIV response and confidence in our ability to predict...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-158
... The general design procedures for free spanning umbilicals are discussed. They may be classified as something between risers, where in-line VIV response normally is disregarded, and free spanning pipelines, where in-line VIV-response controls the VIV fatigue damage. To investigate this free span...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-146
... A Small Scale Experiment for Multi-modal VIV Response of a Long Flexible Horizontal Cylinder Rudi Walujo Prastianto, Koji OTSUKA, and Yoshiho IKEDA Department of Marine System Engineering, Osaka Prefecture University Sakai, Osaka, Japan ABSTRACT Vibration response of a long flexible horizontal...
Proceedings Papers

Paper presented at the The Fourteenth International Offshore and Polar Engineering Conference, May 23–28, 2004
Paper Number: ISOPE-I-04-272
... viv response vibration drag coefficient riser stiffness cylinder test pipe vortex-induced vibration test 1001008 trajectory plot strain fore experiment frequency upstream oil & gas curvature vertical strut investigation pipe instrumentation Laboratory Investigation...

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