Hydrodynamic Interaction of Three Floating Structures
Abstract
This study will highlight the motion characteristics of single body and multiple bodies of offshore structures due to the effect of hydrodynamic interaction by considering the gap distance, the presence of number of neighboring structures and the wave direction headings. In order to analyze the added mass, radiation damping and motion responses that are developed during the interaction between structures, commercial software ANSYS AQWA is used. The analysis are executed by using 100 m diameter of round-shaped FPSO as the reference point for a single body where it is compared with two bodies and three bodies by using 70 m diameter round-shaped FPSO and LNG vessel for gap distance of 25 m and 50 m and wave directions at 00, 450, 900, 1350 and 1800 headings. The results show same trend with previous studies and researches in which the motion responses due to the effect from other structures occur significantly on surge and pitch motions compare to heave mot ion though there are small interactions. As for overall, the gap distance between structures, the presence of number of neighboring structures and the wave directions affect the motions of multiple bodies of offshore structures due to hydrodynamic interaction.
##Keywords:##
Round-Shape Floating Production Storage Offloading; Hydrodynamic Interaction; Gap Distance.
Published
Jun 20, 2014
How to Cite
ABDUL HALIM, Muhammad Farid; KOTO, Jaswar.
Hydrodynamic Interaction of Three Floating Structures.
Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 8, n. 1, p. 1-11, june 2014.
ISSN 2527-6085.
Available at: <https://isomase.org/Journals/index.php/jomase/article/view/490>. Date accessed: 09 june 2026.
doi: http://dx.doi.org/10.36842/jomase.v8i1.490.
References
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24. Siow, C.L., Jaswar, K., Abby, H. & Khairuddin, N.M. 2014. Linearized Morison Drag for Improvement Semi-Submersible Heave Response Prediction by Diffraction Potential. Journal of Ocean, Mechanical and Aerospace Science and Engineering 6: 8-16.
25. Tajali, Z. and Shafieefar, M., 2011. Hydrodynamic Analysis of Multi-Body Floating Piers under Wave Action. Ocean Engineering, 38(17-18), 1925-1933.
26. Van Oortmerssen, G., 1979. Hydrodynamic Interaction between Two Structures of Floating in Waves. Proc. of BOSS ’79. 2nd Int’l Conference on Behavior of Offshore Structures, London.
27. Wackers, J. et al. 2011.Free-Surface Viscous Flow Solution Methods for Ship Hydrodynamics. Archive of Computational Methods in Engineering 18 1–41.
28. Wu, S., Murray, J. J., and Virk, G. S., 1997. The Motions and Internal Forces of a Moored Semi-Submersible in Regular Waves. Ocean Engineering, 24(7), 593-603.
29. Xianchu, Z., Dongjiao, W. and Chwang, A. T., 1997. Hydrodynamic Interaction between Two Vertical Cylinders in Water Waves. Applied Mathematics and Mechanics, 18(10), 927-940.
2. Ali, M. T., Rahman, M. M. and Anan, T., 2010. A Numerical Study on Hydrodynamic Interaction for a Small 3-D Body Floating Freely Close to a Large 3-D Body in Waves. Proc. of Int’l Conference on Marine Technology, Dhaka, Bangladesh.
3. ANSYS, Inc., 2012. AQWA User Manual. ANSYS, Inc. Canonsburg, PA.
4. Azmi, M. F., 2012. Conceptual Design on Round Shaped FPSO. Undergraduate Project Thesis. Universiti Teknologi Malaysia, Johor, Malaysia.
5. Brown, P. A., Rooduijn, E. and Lemoël, M, 2008. Kikeh Development: Design of the World’s 1st Gravity Actuated Pipe (GAP) Fluid Transfer System. Offshore Technology Conference, Houston, Texas, U.S.A.
6. Choi, Y. R. and Hong, S. Y., 2002. An Analysis of Hydrodynamic Interaction of Floating Multi-Body using Higher-Order Boundary Element Method. Proc. of 12th Int’l Offshore and Polar Engineering Conference, Kitakyushu, Japan.
7. Clauss, G. F., Schmittner, C. and Stutz, K., June 23-28, 2002. Time-Domain Investigation of a Semi-Submersible in Rogue Waves.Proc. of 21st Int’l Conference on Offshore Mechanics and Arctic Engineering, Oslo, Norway.
8. Cueva, M., Faria, F., Voogt, A. and Vandenworm, N., 2010. Model Tests and Simulations on Circular Shaped FPSO with Dry Three Solutions. Proc. of 16th Offshore Symposium, Houston, Texas, USA.
9. Fang, M. C. and Kim, C. H., 1986. Hydrodynamically Coupled Motions of Two Ships Advancing in Oblique Waves. Journal of Ship Research.
10 .H-R. Zhu, R-C.Zhu and G. P. Miao, 2008. A Time Domain Investigation on the Hydrodynamic Resonance Phenomena of 3-D Multiple Floating Structures. Journal of Hydrodynamics, 20(5), 611-616. 11. Jaswar, 2013. Marine Hydrodynamic Lecture Note. Universiti Teknologi Malaysia, Johor, Malaysia.
12. Kanbua, W. Motion in the Sea Waves. Thai Marine Meteorological Centre, Bangkok, Thailand.
13. Kashiwagi, M. and Shi, Q., 2010. Pressure Distribution Computed by Wave-Interaction Theory for Adjacent Multiple Bodies. 9th Int’l Conference on Hydrodynamics, Shanghai, China.
14. Kim, M. S. and Ha, M. K., 2002. Prediction of Motion Responses between Two Offshore Floating Structures in Waves. Journal of Ship and Ocean Technology, 6(3), pp. 13-25.
15. Kodan, N., 1984. The Motions of Adjacent Floating Structures in Oblique Waves.Proc. of 3rd Offshore Mechanics and Arctic Engineering, OMAE, New Orleans.
16. Loken, A. E., 1981. Hydrodynamic Interaction between Several Floating Bodies of Arbitrary Form in Waves.Proc. of Int’l Symposium on Hydrodynamics in Ocean Engineering, NIT, Trondheim.
17. MIT., 2001. Marine Hydrodynamics Lecture 19.Department of Ocean Engineering, Massachusetts Institute of Technology, Cambridge, MA.
18. Ohkusu, M., 1974. Ships Motion in Vicinity of a Structure. Proc. of Int’l Conference on Behavior of Offshore Structure, NIT, Trondheim.
19. Saad, A. C., Vilain, L., Loureiro, R. R., Brandao, R. M., Machado Filho, R. Z., Lopes, C. and Gioppo, H., 4-7 May, 2009. Motion Behavior of the Mono-Column FPSO SevanPiranema in Brazilian Waters.Offshore Technology Conference, Houston, Texas, USA.
20. Shaiful, M., 2013. Analysis of Motion on FPSO in Shallow Water with a Non Collinear Environment. Undergraduate Project Thesis. Universiti Teknologi Malaysia, Johor, Malaysia.
21. Siow, C.L., Jaswar, Afrizal, E., Abyn, H., Maimun, A. & Pauzi, M. 2013. Comparative of Hydrodynamic Effect between Double Bodies to Single Body in Tank. The 8thInternational Conference on Numerical Analysis in Engineering: 64 – 73. Pekanbaru, Indonesia.
22. Siow, C.L., Abby, H. & Jaswar. 2013. Semi-Submersible’s Response Prediction by Diffraction Potential Method. The International Conference on Marine Safety and Environment: 21 – 28. Johor, Malaysia.
23. Siow, C.L., Jaswar, K, & Abby, H. 2014. Semi-Submersible Heave Response Study Using Diffraction Potential Theory with Viscous Damping Correction. Journal of Ocean, Mechanical and Aerospace Science and Engineering 5: 23-29.
24. Siow, C.L., Jaswar, K., Abby, H. & Khairuddin, N.M. 2014. Linearized Morison Drag for Improvement Semi-Submersible Heave Response Prediction by Diffraction Potential. Journal of Ocean, Mechanical and Aerospace Science and Engineering 6: 8-16.
25. Tajali, Z. and Shafieefar, M., 2011. Hydrodynamic Analysis of Multi-Body Floating Piers under Wave Action. Ocean Engineering, 38(17-18), 1925-1933.
26. Van Oortmerssen, G., 1979. Hydrodynamic Interaction between Two Structures of Floating in Waves. Proc. of BOSS ’79. 2nd Int’l Conference on Behavior of Offshore Structures, London.
27. Wackers, J. et al. 2011.Free-Surface Viscous Flow Solution Methods for Ship Hydrodynamics. Archive of Computational Methods in Engineering 18 1–41.
28. Wu, S., Murray, J. J., and Virk, G. S., 1997. The Motions and Internal Forces of a Moored Semi-Submersible in Regular Waves. Ocean Engineering, 24(7), 593-603.
29. Xianchu, Z., Dongjiao, W. and Chwang, A. T., 1997. Hydrodynamic Interaction between Two Vertical Cylinders in Water Waves. Applied Mathematics and Mechanics, 18(10), 927-940.
