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On the effects of bending stiffness for flexible riser model tests


Ruskin, A and Tahana, Z and Chai, S and Balash, C and Morand, H and Izarn, C, On the effects of bending stiffness for flexible riser model tests, Proceedings of the 33rd International Conference on Ocean, Offshore and Arctic Engineering, 8-13 June 2014, San Francisco, California, pp. 1-8. ISBN 978-079184546-2 (2014) [Refereed Conference Paper]

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Copyright 2014 ASME

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DOI: doi:10.1115/OMAE2014-23423


Oil and gas production systems are continually moving into more challenging environments. Therefore having a precise understanding of the flexible pipeline behaviour for various configurations is becoming even more important. This paper presents a medium scale test of a flexible riser in a wave configuration aiming at representing the bending stiffness characteristic of a flexible riser. Results are then compared tothose of a dynamic analysis software to validate the experimental modeling. This paper addresses the problem of scaling a flexible steep wave riser for model tests, where the global bending response is considered under quasi-static current loading. A methodology for cost-effective and robust model construction is presented, including an effective method of determining the bending stiffness of the model. A 1/15 scale model of a 8" flexible riser was constructed from silicon hose and foam for testing within the Australian Maritime Collegeís Circulating Water Channel (CWC). Variances in the modelís buoyant section length, system offset and bending stiffness were tested at different flow velocities to observe the changes in curvature experienced by the riser. The model test regime was formulated specifically to compare the results of CWC testing with numerical modelling results. Comparison between model test and numerical results demonstrate good agreement.

Item Details

Item Type:Refereed Conference Paper
Keywords:Flexible Riser, Bending Stiffness, Model Tests
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ocean engineering
Objective Division:Energy
Objective Group:Mining and extraction of energy resources
Objective Field:Oil and gas extraction
UTAS Author:Ruskin, A (Mr Alexander Ruskin)
UTAS Author:Tahana, Z (Mr Zak Tahana)
UTAS Author:Chai, S (Professor Shuhong Chai)
UTAS Author:Balash, C (Dr Cheslav Balash)
ID Code:93169
Year Published:2014
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-07-14
Last Modified:2018-04-05
Downloads:2 View Download Statistics

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