This article shows the results of the tests of interference between rigid risers, in relation of Vortex Induced Vibration (VIV), made in the Institute de Pesquisas Tecnolo´gicas do Estado de Sa˜o Paulo (IPT), Brazil. It was tested several conditions with different arrangements with two cylinders in tandem and side by side positions, with different distances between them. The models were installed in an elastic base with two degrees of freedom for each cylinder. The stiffness and the natural frequencies were calibrated to have the maximum amplitude of VIV within the possible range of velocities in the IPT towing tank. The final lift and drag coefficients were measured, for one cylinder with and without strakes and for two cylinders. All these data are used in Riser Analyses giving more real results in relation of VIV analysis, clashing and interference between risers.
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ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
June 10–15, 2007
San Diego, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4269-X
PROCEEDINGS PAPER
Interference Between Risers
Ricardo Franciss,
Ricardo Franciss
Petrobras R&D Center, Rio de Janeiro, RJ, Brazil
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Andre´ Fujarra
Andre´ Fujarra
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
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Ricardo Franciss
Petrobras R&D Center, Rio de Janeiro, RJ, Brazil
Andre´ Fujarra
University of Sa˜o Paulo, Sa˜o Paulo, SP, Brazil
Paper No:
OMAE2007-29107, pp. 697-702; 6 pages
Published Online:
May 20, 2009
Citation
Franciss, R, & Fujarra, A. "Interference Between Risers." Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Volume 3: Pipeline and Riser Technology; CFD and VIV. San Diego, California, USA. June 10–15, 2007. pp. 697-702. ASME. https://doi.org/10.1115/OMAE2007-29107
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