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TECHNICAL PAPERS

Alternative Design of Flexible Jumpers for Deepwater Hybrid Riser Configurations

[+] Author and Article Information
Antonio C. Fernandes, Breno P. Jacob, Rogério A. Carvalho

COPPE/UFRJ, Rio de Janeiro, Brazil

Renato M. C. Silva

PETROBRAS, Rio de Janeiro, Brazil Mem. ASME

Carlos A. D. Lemos

PETROBRAS, Rio de Janeiro, Brazil

J. Offshore Mech. Arct. Eng 123(2), 57-64 (Jan 25, 2001) (8 pages) doi:10.1115/1.1361060 History: Received March 31, 2000; Revised January 25, 2001
Copyright © 2001 by ASME
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References

Figures

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Behavior of function cosh(x)/x
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Variation of the top tension with the total suspended length
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Definition of the critical length
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Sketch of Excel spreadsheet for quasi-static analysis of TLR jumpers
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Influence of jumper length on top tension
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Mode shapes 1, 2, and 6
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Envelopes and time-histories of tension at the connection with the platform, undamped case
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Envelopes and time-histories of tension at the connection with the platform, CD=0.1
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Envelopes and time-histories of tension at the connection with the platform, CD=0.7
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Model test configuration; full-scale correspondence within brackets
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Numerical model—general view
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Model test results (×-marked lines) compared with numerical results (continuous lines), using drag coefficients=1.0, 2.0, and 3.0; the smaller amplitude corresponds to 1.0 and the larger to 3.0

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