International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical studies on flow-induced motions of a semi-submersible with three circular columns

  • Tian, Chenling (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Liu, Mingyue (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Xiao, Longfei (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Lu, Haining (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Wang, Jin (CNOOC Research Institute Ltd.)
  • Received : 2020.08.31
  • Accepted : 2021.06.10
  • Published : 2021.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

The semi-submersible with three circular columns is an original concept of efficient multifunctional platform, which can be used for marginal oil, gas field, and Floater of Wind Turbines (FOWT). However, under certain flow conditions, especially in uniform current with specific velocities, the eddies will alternatively form and drop behind columns, resulting in the fluctuating lift force and drag force. Consequently, the semi-submersible will subject to the Flow-Induced Motions (FIM). Based on the Detached Eddy Simulation (DES) method, the numerical studies were carried out to understand the FIM characteristics of the three-column semi-submersible at two different parameters, i.e., current incidences (0°, 30°, and 60°-incidences) and reduced velocities (4 ≤ Ur ≤ 14). The results indicate that the lock-in range of 6 ≤ Ur ≤ 10 for the transverse motions is presented, and the largest transverse non-dimensional nominal amplitude is observed at 60°-incidence, with a value of Ay/D = 0:481. The largest yaw amplitude Ayaw is around 3.0° at 0°-incidence in the range of 8 ≤ Ur ≤ 12. The motion magnitude is basically the same as that of a four-column semi-submersible. However, smaller responses are presented compared to those of the three-column systems revealing the mitigation effect of the pontoon on FIM.

Keywords

Acknowledgement

The authors acknowledge the support of the National Natural Science Foundation of China (Grant no. 51909158), the support of the subproject of the Important National Science & Technology Specific Projects (2016ZX05028-002-004), Ministry of Industry and Information Technology of China (Project No. [2016] 23), and Open Foundation of State Key Laboratory of Ocean Engineering (Project No. 1808).

References

  1. Bai, Z., Xiao, L., Cheng, Z., Lai, Z., 2014. Experimental study on vortex induced motion response of a dDeep Draft Semi-submersible platform. Chuan Bo Li Xue/J Ship Mech. 18.
  2. Chen, C.-R., Chen, H.-C., 2016. Simulation of vortex-induced motions of a deep draft semi-submersible in current. Ocean. Eng. 118, 107-116. https://doi.org/10.1016/j.oceaneng.2016.04.005
  3. Finnigan, T., Irani, M., Dijk, Rv, 2005. Truss Spar VIM in Waves and Currents. 24th International Conference On Offshore Mechanics And Arctic Engineering. Halkidiki, Greece. OMAE2005-67054.
  4. Fujarra, A.L.C., Goncalves, R.T., Faria, F., Cueva, M., Nishimoto, K., Siqueira, E.F.N., 2009. Mitigation of vortex-induced motions of a monocolumn platform. 28th International Conference on Ocean. Offshore and Arctic Engineering, Honolulu, Hawaii, USA. OMAE2009-79380.
  5. Goncalves, R.T., Rosetti, G.F., Fujarra, A.L.C., Nishimoto, K., Oliveira, A.C., 2011. Experimental study on vortex-induced motions (VIM) of a large-volume semi-submersible platform. 30th International Conference on Ocean. Offshore and Arctic Engineering, Rotterdam, The Netherlands. OMAE2011-49010.
  6. Goncalves, R.T., Rosetti, G.F., Fujarra, A.L.C., 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. Eng. 54 (4), 150-169. https://doi.org/10.1016/j.oceaneng.2012.06.032
  7. Goncalves, R.T., Rosetti, G.F., Fujarra, A.L.C., Oliveira, A.C., 2013. Experimental study on vortex-induced motions of a semi-submersible platform with four square columns, Part II: effects of surface waves, external damping and draft condition. Ocean. Eng. 62, 10-24. https://doi.org/10.1016/j.oceaneng.2013.01.019
  8. Goncalves, R.T., Fujarra, A.L.C., Rosetti, G.F., Kogishi, A.M., Koop, A., 2015. Effects of column designs on the VIM response of deep-draft semi-submersible platforms. The Twenty-Fifth International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers.
  9. Goncalves, R.T., Hannes, N.H., Chame, M.E., et al., 2018a. Experimental Study on Flow-Induced Motion of an Array of Four Cylinders with Different Spacing Ratio. OCEANS-MTS/IEEE Kobe Techno-Oceans (OTO), 2018, a: IEEE.
  10. Goncalves, R.T., Chame, M.E.F., Hannes, N.H., de Paula Lopes, P.P.S., Hirabayashi, S., Suzuki, H., 2018b. Experimental study on flow-induced motion of an array of three cylinders with circular, square, and diamond sections. In: The 28th International Ocean and Polar Engineering Conference, b. International Society of Offshore and Polar Engineers.
  11. Holmes, S., 2008. Predicting Spar VIM Using CFD, vol. 2008. 27th International Conference on Offshore Mechanics and Arctic Engineering, Estoril, Portugal. OMAE2008 57706 June 15-20.
  12. Hong, Y., Choi, Y., Lee, J., Kim, Y., 2008. Vortex-induced Motion of a Deep-Draft Semi-submersible in Current and Waves. The Eighteenth (2008) International Offshore and Polar Engineering Conference (ISOPE). Vancouver, BC, Canada.
  13. Kim, J.-W., Magee, A., Guan, K.Y.H., 2011. CFD Simulation of Flow-Induced Motions of a Multi-Column Floating Platform. 30th International Conference On Ocean. Offshore and Arctic Engineering Rotterdam, The Netherlands. OMAE2011-49437.
  14. Kim, S.J., Spernjak, D., Holmes, S., Vinayan, V., Antony, A., 2015. Vortex-induced Motion of Floating Structures CFD Sensitivity Considerations of Turbulence Model and Mesh Refinement. 34th International Conference on Ocean, Offshore and Arctic Engineering. St. John's, Newfoundland, Canada. OMAE2015-42221.
  15. Koop, A., Rijken, O., Vaz, G., Maximiano, A., Rosetti, G., 2016a. CFD Investigation on Scale and Damping Effects for Vortex Induced Motions of a Semi-submersible Floater. Offshore Technology Conference (Offshore Technology Conference).
  16. Koop, A., Wilde, Jd, Fujarra, A.L.C., et al., 2016b. Investigation on reasons for possible difference between VIM responce in the field and in model tests. 35th International Conference on Ocean, Offshore and Arctic Engineering. Busan, South Korea. OMAE2016-54746.
  17. Lee, S.-K., Chien, H.-P., Gu, H., 2014. CFD Study of Deep Draft Semisubmersible VIM. Offshore Technology Conference.
  18. Lefevre, C., Constantinides, Y., Kim, J.W., et al., 2013. Guidelines for CFD Simulations of Spar VIM. 32th International Conference On Ocean, Offshore And Arctic Engineering. Nantes, France. OMAE2013-10333.
  19. Liang, Y., Tao, L., Xiao, L., Liu, M., 2017. Experimental and numerical study on vortex-induced motions of a deep-draft semi-submersible. Appl. Ocean Res. 67, 169-187. https://doi.org/10.1016/j.apor.2017.07.008
  20. Liu, M., Xiao, L., Kou, Y., Wu, F., 2015a. Experimental and numerical studies on the excitation loads and vortex structures of four circular section cylinders in a square configuration. Ships Offshore Struct. 11 (7), 734-746.
  21. Liu, M., Xiao, L., Yang, L., 2015b. Experimental investigation of flow characteristics around four square-cylinder arrays at subcritical Reynolds numbers. International Journal of Naval Architecture & Ocean Engineering 7 (5), 906-919. https://doi.org/10.1515/ijnaoe-2015-0063
  22. Liu, M., Xiao, L., Lu, H., Li, J., Yu, X., 2016a. Influence of the draft condition on vortex-induced motions of a semi-submersible platform with four square columns. ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers.
  23. Liu, M., Xiao, L., Lu, H., Shi, J., 2016b. Experimental investigation into the influences of pontoon and column configuration on vortex-induced motions of deep-draft semi-submersibles. Ocean. Eng. 123, 262-277. https://doi.org/10.1016/j.oceaneng.2016.07.007
  24. Liu, M., Xiao, L., Lu, H., Li, J., Yu, X., 2016c. Influence of the draft condition on vortexinduced motions of a semi-submersible platform with four square columns. 35th International Conference on Ocean, Offshore and Arctic Engineering. Busan, South Korea. OMAE2016-54764.
  25. Liu, M., Xiao, L., Liang, Y., Tao, L., 2017a. Experimental and numerical studies of the pontoon effect on vortex-induced motions of deep-draft semi-submersibles. b J. Fluid Struct. 72, 59-79. https://doi.org/10.1016/j.jfluidstructs.2017.04.007
  26. Liu, M., Xiao, L., Kou, Y., Lu, H., 2017b. Numerical Study on Vortex-Induced Motions of Semi-submersibles with Various Types of Columns, a. 36th International Conference on Ocean, Offshore and Arctic Engineering, Trondheim, Norway. OMAE2017-62355.
  27. Maximiano, A.S., Koop, A., de Wilde, J., Goncalves, R.T., 2016. Experimental study on the sensitivity of vortex-induced motions (VIM) of a semi-submersible floater to damping and mass ratio. The 26th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers.
  28. Rijken, O., 2014. Examining the Effects of Scale, Mass Ratios and Column Shapes on the Vortex Induced Motion Response of a Semisubmersible through CFD Analyses. 33rd International Conference On Ocean. Offshore and Arctic Engineering, San Francisco, California, USA. OMAE2014-23471.
  29. Rosetti, G.F., Goncalves, R.T., Fujarra, A.L.C., Nishimoto, K., Ferreira, M.D., 2009. A phenomenological model for vortex-induced motions of the monocolumn platform and comparison with experiments. 28th International Conference on Ocean. Offshore and Arctic Engineering, Honolulu, Hawaii, USA. OMAE2009-79431.
  30. Rosetti, G.F., Goncalves, R., Fujarra, A.L.C., Koop, A., 2016. CFD calculations of the vortex-induced motions of a circular-column semi-submersible. ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers.
  31. Sagrilo, L.V.S., Siqueira, MQd, Lacerda, TAGd, Ellwanger, G.B., Lima, ECPd, Siqueira, E.F.N., 2009. VIM and Wave-Frequency Fatigue Damage Analysis for SCRs Connected to Monocolumn Platforms. 28th International Conference On Ocean. Offshore and Arctic Engineering, Honolulu, Hawaii, USA. OMAE2009-79807.
  32. Sayers, A.T., 1987. Flow interference between three equispaced cylinders when subjected to a cross flow. J. Wind Eng. Ind. Aerod. 31 (1), 9-28. https://doi.org/10.1016/0167-6105(88)90185-7
  33. Tan, J.H.C., Magee, A., Kim, J.W., Teng, Y.J., Zukni, N.A., 2013a. CFD simulation for vortex induced motions of a multi-column floating platform. Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering OMAE2013. Nantes, France.
  34. Tan JHC, Magee A, Kim JW, Teng YJ, Zukni NA. CFD Simulation for Vortex Induced Motions of a Multi-Column Floating Platform. 32nd International Conference on Ocean, Offshore and Arctic Engineering, Nantes, France: OMAE2013-11117.
  35. Waals, O.J., Phadke, A.C., Bultema, S., 2007. Flow Induced Motions of Multi Column Floaters. 26th International Conference on Offshore Mechanics and Arctic Engineering, San Diego, California, USA. OMAE2007-29539.
  36. Wu, F., Xiao, L., Liu, M., Tian, X., 2016. A two-dimensional numerical study of vortex induced motion of a semi-submersible with rectangular sections in couping currents and waves. J. Shanghai Jiao Tong Univ. (Sci.) 50 (3), 460-465.
  37. Xiang, S., Cao, P., Rijken, O., Ma, J., Chen, Y., 2010. Riser VIM fatigue design induced by deep draft semi-submersible. ASME 2010 International Conference on Ocean. Offshore and Arctic Engineering.
  38. Zdravkovich, M.M., 1987. The effects of interference between circular cylinders in cross flow. J. Fluid Struct. 1 (2), 239-261. https://doi.org/10.1016/S0889-9746(87)90355-0
  39. Zhang, X., Hu, X., Song, X., You, Y., 2017. Numerical studies on vortex-induced motions of a multi-column deep-draft oil and gas exploration platform. Ocean. Eng. 145, 77-94. https://doi.org/10.1016/j.oceaneng.2017.08.046
  40. Zou J, Poll P, Antony A, et al. VIM Model Testing and VIM Induced Mooring Fatigue of a Dry Tree Paired-Column Semisubmersible Platform2014.