Advertisement

China Ocean Engineering

, Volume 32, Issue 1, pp 1–13 | Cite as

Study on Vortex-Induced Motions of A New Type of Deep Draft Multi-Columns FDPSO

  • Jia-yang Gu
  • Yu-lin Xie
  • Yuan Zhao
  • Wen-juan Li
  • Yan-wu Tao
  • Xiang-hong Huang
Article
  • 60 Downloads

Abstract

A numerical simulation and an experimental study on vortex-induced motion (VIM) of a new type of deep draft multi-columns floating drilling production, storage and offloading (FDPSO) are presented in this paper. The main dimension, the special variable cross-section column and the cabin arrangement of the octagonal pontoon are introduced based on the result. The numerical simulation is adapted to study the effects of current incidence angles and reduced velocities on this platform’s sway motion response. The 300 m water depth equivalent truncated mooring system is adopted for the model tests. The model tests are carried out to check the reliability of numerical simulation. The results consist of surge, sway and yaw motions, as well as motion trajectories. The maximum sway amplitudes for different types of offshore platform is also studied. The main results show that the peak frequencies of sway motion under different current incidence angles and reduced velocities vary around the natural frequency. The analysis result of flow field indicates that the change of distribution of vortex in vertical presents significant influences on the VIM of platform. The trend of sway amplitude ratio curve of this new type FDPSO differs from the other types of platform. Under 45° current incidence angle, the sway amplitude of this new type of FDPSO is much smaller than those of other types of offshore platform at 4.4 ≤ Vr ≤ 8.9. The typical ‘8’ shape trajectory does not appear in the platform’s motion trajectories.

Keywords

FDPSO multi-columns vortex-induced motion (VIM) model tests variable cross-section column 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. American Petroleum Institute, 2010. API Recommended Practice 2TPlanning, Designing, and Constructing Tension Leg Platform, 3rd ed., API.Google Scholar
  2. Assi, G.R.S., 2014. Wake-induced vibration of tandem and staggered cylinders with two degrees of freedom, Journal of Fluids and Structures, 50, 340–357.CrossRefGoogle Scholar
  3. Bai, Z.N., Xiao, L.F., Cheng, Z.S. and Lai, Z.M., 2014. Experimental study on vortex induced motion response of a deep draft semi-submersible platform, Journal of Ship Mechanics, 18(4), 377–384. (in Chinese)Google Scholar
  4. Chen, C.R. and Chen, H.C., 2016. Simulation of vortex-induced motions of a deep draft semi-submersible in current, Ocean Engineering, 118, 107–116.CrossRefGoogle Scholar
  5. Fujiwara, T., Nimura, T., Shimozato, K. and Matsui, R., 2016. VIM model test and assessment on a semi-submersible type floater with different column intervals, Proceedings of the 35th International Conference on Ocean, Offshore and Arctic Engineering, ASME, Busan, South Korea, pp. V001T01A055.Google Scholar
  6. Gonçalves, R.T., Fujarra, A.L.C., Rosetti, G.F., Kogishi, A.M. and Koop, A., 2015. Effects of column designs on the VIM response of deep-draft semi-submersible platforms, Proceeding of the 25th International Ocean and Polar Engineering Conference, International Society of Offshore and Polar Engineers, Kona, Hawaii, USA.Google Scholar
  7. Gonçalves, R.T., Rosetti, G.F., Fujarra, A.L.C. and Oliveira, A.C., 2012. Experimental study on vortex-induced motions of a semi-submersible platform with four square columns. part I: Effects of current incidence angle and hull appendages, Ocean Engineering, 54, 150–169.CrossRefGoogle Scholar
  8. Gu, J.Y., Wu, J. and Yang, J.M., 2014. Review of the research on vortex-induced motion of a new deepwater multi-column FDPSO, Journal of Jiangsu University of Science and Technology (Natural Science Edition), 28(5), 415–422. (in Chinese)Google Scholar
  9. Kim, J.W., Magee, A. and Guan, K.Y.H., 2011. CFD simulation of flow-induced motions of a multi-column floating platform, Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, ASME, Rotterdam, The Netherlands, pp. 319–326.Google Scholar
  10. Korbijn, F., Husem, I. and Pettersen, E., 2005. Octabuoy SDM: A compact semi-submersible design for deepwater applications, Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering, ASME, Halkidiki, Greece, pp. 1087–1095.Google Scholar
  11. Magee, A., Sheikh, R., Guan, K.Y.H., Choo, J.T.H., Malik, A.M.A., Ghani, M.P.A. and Abyn, H., 2011. Model tests for VIM of multicolumn floating platforms, Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, ASME, Rotterdam, The Netherlands, pp. 127–136.Google Scholar
  12. Pontaza, J.P., Baar, J. and Liu, N., 2015. Vortex-induced motions of a model scale column stabilized floater with round columns in calm water and random waves, Proceedings of the ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, ASME, St. John’s, Newfoundland, Canada, pp. V002T08A017.Google Scholar
  13. Qian, Y.H., D’Humières, D. and Lallemand, P., 1992. Lattice BGK models for Navier–Stokes equation, EPL (Europhysics Letters), 17(6), 479.CrossRefMATHGoogle Scholar
  14. Smagorinsky, J., 1963. General circulation experiments with the primitive equations, Monthly Weather Review, 91(3), 99–164.CrossRefGoogle Scholar
  15. Stansberg, C.T., Ormberg, H. and Oritsland, O., 2002. Challenges in deep water experiments: Hybrid approach, Journal of Offshore Mechanics and Arctic Engineering, 124(2), 90–96.CrossRefGoogle Scholar
  16. Sumner, D., 2004. Closely spaced circular cylinders in cross-flow and a universal wake number, Journal of Fluids Engineering, 126(2), 245–249.CrossRefGoogle Scholar
  17. Sumner, D., Richards, M.D. and Akosile, O.O., 2005. Two staggered circular cylinders of equal diameter in cross-flow, Journal of Fluids and Structures, 20(2), 255–276.CrossRefGoogle Scholar
  18. Tan, J.H., Teng, Y., Magee, A.R. and Ly, B.T., 2016. The effect of appurtenances on the VIM performance of a TLP for Southeast Asia, Proceedings of the Offshore Technology Conference-Asia, Offshore Technology Conference, Kuala Lumpur, Malaysia.Google Scholar
  19. To, A.P. and Lam, K.M., 2007. Flow-induced vibration of a flexibly mounted circular cylinder in the proximity of a larger cylinder downstream, Journal of Fluids and Structures, 23(3), 523–528.CrossRefGoogle Scholar
  20. Waals, O., Phadke, A.C. and Bultema, S., 2007. Flow induced motions of multi column floaters, Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering, ASME, San Diego, California, USA, pp. 669–678.Google Scholar
  21. Zeinoddini, M., Tamimi, V. and Bakhtiari, A., 2014. WIV response of tapered circular cylinders in a tandem arrangement: An experimental study, Applied Ocean Research, 47, 162–173.CrossRefGoogle Scholar
  22. Zhao, M. and Cheng, L., 2012. Numerical simulation of vortex-induced vibration of four circular cylinders in a square configuration, Journal of Fluids and Structures, 31, 125–140.CrossRefGoogle Scholar

Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Jia-yang Gu
    • 1
    • 2
  • Yu-lin Xie
    • 2
  • Yuan Zhao
    • 3
  • Wen-juan Li
    • 1
  • Yan-wu Tao
    • 1
  • Xiang-hong Huang
    • 1
  1. 1.Marine Equipment and Technology InstituteJiangsu University of Science and TechnologyZhenjiangChina
  2. 2.School of Naval Architecture and Marine EngineeringJiangsu University of Science and TechnologyZhenjiangChina
  3. 3.Marine Design & Research Institute of ChinaShanghaiChina

Personalised recommendations