Prediction of Semi-Submersible’s Motion Response by Using Diffraction Potential Theory and Heave Viscous Damping Correction
DOI:
https://doi.org/10.11113/jt.v69.3276Keywords:
Multiple hulls, semi-submersible, motion response, diffraction potential, green functionAbstract
This paper proposes a three dimensional diffraction potential theory with heave viscous damping correction to predict motion response of multiple hulls semi-submersible structure. The heave viscous damping correction was applied in this paper to avoid the execution return an infinity value for heave motion when the heave motion is dominated by damping term. On previous stage, this method was shown it capability to apply on single hull structure. However, some modification is required to able the single hull diffraction potential theory applied to multiple hull structure. Upon this stage, the modification was made into the meshing system in purposes to able the numerical coding calculate the response of semi-submersible structure. This paper also presented the comparison between the result calculate by diffraction potential theory, commercial software-Hydrostar and experiment result in the selected semi-submersible model. In the comparison, it is obtained that the tendency between the numerical results and the experimental result is agreed between each other. Â
References
J. L.Hess, A. M. O. Smith. 1964. Calculation of Nonlifting Potential Flow About Arbitrary 3D Bodies. Journal of Ship Research.
G. Van Oortmerssen. 1979. Hydrodynamic Interaction Between Two Structures of Floating in Waves. Proc. of BOSS ‘79. Second International Conference on Behavior of Offshore Structures, London.
A. E. Loken. 1981. Hydrodynamic Interaction Between Several Floating Bodies of Arbitrary form in Waves. Proc. of International Symposium on Hydrodynamics in Ocean Engineering, NIT, Trondheim.
S. Wu, J. J. Murray, G. S. Virk. 1997. The Motions and Internal Forces of a Moored Semi-submersible in Regular Waves. Ocean Engineering. 24(7): 593–603.
O. Yilmaz, A. Incecik. 1996. Extreme Motion Response Analysis of Moored Semi-submersibles. Ocean Engineering. 23(6): 497–517.
M. Söylemez. 1995. Motion Tests of a Twin-hulled Semi-submersible. Ocean Engineering. 22(6): 643–660.
G. F. Clauss, C. Schmittner, K. 2002. Stutz, Time-Domain Investigation of a Semi Submersible in Rogue Waves. Proc. of the 21st International Conference on Offshore Mechanics and Arctic Engineering (OMAE2002), Oslo, Norway.
V. L. F. Matos, A. N. Simos, S. H. Sphaier. 2011. Second-order Resonant Heave, Roll and Pitch Motions of a Deep-draft Semi-submersible: Theoretical and Experimental Results. Ocean Engineering. 38(17–18): 2227–2243.
J. Wackers et al. 2011. Free-Surface Viscous Flow Solution Methods for Ship Hydrodynamics. Archive of Computational Methods in Engineering. 18: 1–41.
E. Afrizal, F. M. Mufti, C. L. Siow, Jaswar. 2013. Study of Fluid Flow Characteristic Around Rounded-Shape FPSO Using RANS Method. The 8th International Conference On Numerical Analysis In Engineering, Pekanbaru, Indonesia.
Jaswar et al. 2011. An Integrated CFD Simulation Tool in Naval Architecture and Offshore (NAO) Engineering. The 4th International Meeting of Advances in Thermofluids, Melaka, Malaysia. AIP Conf. Proc. 1440: 1175–1181.
H. Abyn, A. Maimun, Jaswar, M. Rafiqul Islam, A. Magee, B. Bodagi, M. Pauzi. 2012. Model Test of Hydrodynamic Interactions of Floating Structures in Regular Waves. Proc. of the 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro2012), UTM, Malaysia.
H. Abyn, A. Maimun, Jaswar, M. Rafiqul Islam, A. Magee, B. Bodagi, M. Pauzi. 2012. Effect of Mesh Number on Accuracy of Semi-Submersible Motion Prediction. Proc. of the 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro2012), UTM, Malaysia.
C. L. Siow, Jaswar, E. Afrizal, H. Abyn, A. Maimun, M. Pauzi. 2013. Comparative of Hydrodynamic Effect between Double Bodies to Single Body in Tank, The 8th International Conference on Numerical Analysis in Engineering, Pekanbaru, Indonesia.
K. U. Tiau, Jaswar, Hassan Abyn and C. L. Siow. 2012. Study On Mobile Floating Harbor Concept, Proc. of the 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro2012), UTM, Malaysia.
Kvittem, M. I., Bachynski, E. E., Moan, T. 2012. Effect of Hydrodynamic modeling in Fully Coupled Simulations of a Semi-Submersible Wind Turbine. Energy Procedia. 24.
Siow, C. L., Abby Hassan, and Jaswar. 2013. Semi-Submersible’s Response Prediction by Diffraction Potential Method. The International Conference on Marine Safety and Environment.
Journee, J. M. J and Massie, W. W. 2001. Offshore Hydromechanics. 1st ed. Delf University of Technology.
C. L Sow, Jaswar Koto and Hassan Abyn. 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.
Nallayarasu, S. and Siva Prasad, P. 2012. Hydrodynamic Response of Spar and Semi-submersible Interlinked by a Rigid Yoke–Part 1: Regular Wave. Ship and Offshore Structures. 7(3).
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