Abstract
Tension Leg Platform (TLP) is a hybrid structure used as oil drilling and production facility within water depths of 1200 m. The extension of this TLP concept to deeper waters is a challenge and warrants for some innovative design concepts. In this paper, a relatively new concept of TLP which is christened as Tension-Based Tension Leg Platform (TBTLP) and patented by Srinivasan (1998) has been chosen for study. Response analysis of TLP with one tension base under irregular waves for three different sea states has been performed using hydrodynamic tool ANSYS® AQWA™. Results are reported in terms of RAOs, response spectrums for surge, heave and pitch degrees of freedom from which spectral statistics have been obtained. The statistics of TBTLP have been compared with TLPs (without tension base) for two different water depths to highlight the features of the new concept. The effect of viscous damping and loading effects on the RAOs are also investigated.
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References
Abbott, P., Nygaard, C., Huang, E., Johnson, B., DSouza, R., Dove, P. and Datta, B., 1994. Tension raft/frame reduces TLP motions, costs, Offshore, 54(8): 40–62.
Ansys Inc., 2010. AQWA (LINE, LIBRIUM and NAUT) Manuals, Ansys Inc., Release 13.0.
Chakrabarti, S. K., 1987. Hydrodynamics of Offshore Structures, Computational Mechanics Limited and Springer-Verlag, New York.
DNV, 2010. DNV-RP-C205: Environmental Conditions and Environmental Loads, October 2010.
Jagannathan, S., 1992. The suspended tension leg platform (STLP): A new platform concept for deepwater exploration and production, Proceedings of the 11th International Conference on Offshore Mechanics and Arctic Engineering, Calgary, Canada, Vol. 1, 517–525.
Kibbee, S., 1996. Sea star minimal platform for small deepwater reserves, Offshore, 56(6): 46–73.
Murray, J., Yang, C. K., Yang, W., Krishnaswamy, P. and Zou, J., 2009. An extended tension leg platform design for post-Katrina Gulf of Mexico, Proceedings of the 19th International Offshore and Polar Engineering Conference, Osaka, Japan, Vol. 1, 120–126.
Bhaskara Rao, D. S., Panneer Selvam, R. and Srinivasan, N., 2012. Hydrodynamic analysis of tension based tension leg platform, Proceedings of the 31st International Conference on Ocean, Offshore Mechanics and Arctic Engineering (OMAE2012), Rio de Janeiro, Brazil, 3256, 201–207.
Srinivasan, N., 1998. Tension Base for Tension Leg Platform, United States Patent No: 5707178.
Srinivasan, N., 2010. Tension-based tension leg platform: Technologies for ultra deepwater applications, Proceedings of the 29th International Conference on Ocean, Offshore Mechanics and Arctic Engineering (OMAE2010), Shanghai, China, 0042, 31–42.
Srinivasan, N., 2011. TLP for Gulf of Mexico Ultra Deep Water, Deep Offshore Technology International, New Orleans, USA.
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Bhaskara Rao, D.S., Panneer Selvam, R. Response analysis of tension-based tension leg platform under irregular waves. China Ocean Eng 30, 603–614 (2016). https://doi.org/10.1007/s13344-016-0038-2
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DOI: https://doi.org/10.1007/s13344-016-0038-2