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Keywords: riser model
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Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3255
... frequency mode transition riser model vibration response out-of-plane direction in-plane response riser dominant frequency experimental study transition out-of-plane response catenary flexible riser amplitude ocean eng flexible riser competition vibration Experimental Study on the Vortex...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2174
..., are made to simulate drilling and production risers respectively. The riser models are arranged in tandem with 4 D 2 wall-to-wall spacing. Reynolds numbers in this test are from 2800 to 11000. Fiber optic strain gages are used to measure both cross-flow and in-line strain response. Experimental results...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-038
... frequency numerical simulation upstream oil & gas inline vibration platform contour vibration vortex-induced vibration modal analysis top-tensioned riser displacement riser simulation viv-foam-sjtu solver frequency component modal transition vibration frequency riser model Modal...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-121
... ABSTRACT Model tests of a top-tensioned riser model were carried out as a part of a joint industry project, with the purpose of verifying the calculations of the riser analysis program RIFLEX. Sinusoidal motion in one direction was imposed at the top end of the riser model to simulate vessel...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-188
... will affect the dynamic response, etc. cylinder amplitude response frequency component buoyancy module offshore technology conference coverage ratio frequency trajectory displacement full coverage model experiment different position vibration riser model diameter high frequency...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-307
...Risers Model Tests: Scaling Methodology and Dynamic Similarity Felipe Rateiro 1 Celso P. Pesce 2 Rodolfo T. Gonçalves 1 Guilherme R. Franzini 2 André Luís Condino Fujarra 1,2 Rafael Salles 2 Pedro Mendes 3 1TPN Numerical Offshore Tank, Escola Politécnica University of São Paulo São Paulo, SP...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-218
... Engineering, Mokpo National University, Mokpo, Korea ABSTRACT Numerical study about the dynamic effect of internal progressive flow on a flexible riser model deformed by external shear current has been carried out. The CAE technology which combines ANSYS structural analysis software with a CFD program (CFX...
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
... ABSTRACT: Experimental investigations are conducted to study the influence of attack angle of multiple control rods on the effectiveness of Vortex- Induced Vibration (VIV) suppression for deepwater riser. The riser model is made of UPVC pipe with length to diameter ratio L / D = 1750...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-107
... of a naked brass pipe under uniform and sheared currents, carried out by MARINETEK. The second one relates to the VIV experiment of long FRP pipe under sheared current which was carried out by KORDI. Brass pipe under uniform and sheared currents In this VIV experiment, the riser model was made of a brass...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-411
... ABSTRACT This paper reports experimental tests on vortex-induced vibration (VIV) of a long flexible riser towed horizontally in a wave basin. The riser model has an external diameter of 16 mm and a total length of 28.04 m, giving an aspect ratio of about 1750. Reynolds numbers are within...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-342
... Using various cylindrical rigid riser models, top forced oscillation tests have been carried out to study interactions between hung-off risers and an internal fluid. A kind of theoretical model of a weakly-damped oscillator has been applied to reveal the mechanism of such interactions. It has...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-403
... results are compared with experimental data obtained from a 35-meter riser model. Good agreement in amplitude response is observed in these comparisons. INTRODUCTION One of the main challenges of deep petroleum production is the response prediction of the riser system employed to transport oil from...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-404
... A statistical pattern recognition technique based on time series analysis of vibration data is presented in this paper. A 20-meter riser model experimentally validated is used for the numerical implementation of this technique. The dynamic response of the riser model is assessed using a semi...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-142
... vibration of a marine riser has been treated as a stochastic problem because of its strong non-linearity and difficulty of deterministic calculation. In this research the stability of vortex induced vibration of a flexible riser is studied experimentally. A flexible riser model was forced to oscillate...
Proceedings Papers

Paper presented at the The Fifteenth International Offshore and Polar Engineering Conference, June 19–24, 2005
Paper Number: ISOPE-I-05-141
... by the experimental results. In experiments, the top end of a flexible riser model was forced to oscillate irregularly in still water. For the irregular motion of the top end, the surging motion of the floating structure was assumed to be induced by waves. Finally, to validate the accuracy of this numerical scheme...
Proceedings Papers

Paper presented at the The Fourteenth International Offshore and Polar Engineering Conference, May 23–28, 2004
Paper Number: ISOPE-I-04-315
... ABSTRACT A numerical simulation scheme has been developed for the vortex induced vibration (VIV) response of flexible risers and has been validated by experimental results. We carried out model experiments in an experimental tank in which a flexible riser model was forced to surge by fixing...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-152
... & gas longitudinal stiffness riser riser model simple model actual riser riser drillship Experimental Analysis on Motions of Riser for IODP Deepwater Ri Eigo Miyazaki, Masanori Kyo OD21 Program Department Japan Marine Science and Technology Center Yokosuka, Japan Hironori Yasukawa Nagasaki R...

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