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Experimental study of nonlinear behaviors of a free-floating body in waves

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Abstract

Nonlinear behaviors of a free-floating body in waves were experimentally investigated in the present study. The experiments were carried out for 6 different wave heights and 6 different wave periods to cover a relatively wide range of wave nonlinearities. A charge-coupled device (CCD) camera was used to capture the real-time motion of the floating body. The measurement data show that the sway, heave and roll motions of the floating body are all harmonic oscillations while the equilibrium position of the sway motion drifts in the wave direction. The drift speed is proportional to wave steepness when the size of the floating body is comparable to the wavelength, while it is proportional to the square of wave steepness when the floating body is relatively small. In addition, the drift motion leads to a slightly longer oscillation period of the floating body than the wave period of nonlinear wave and the discrepancy increases with the increment of wave steepness.

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References

  • Bouscasse, B., Colagrossi, A., Marrone, S. and Antuono, M., 2013. Nonlinear water wave interaction with floating bodies in SPH, J. Fluid. Struct., 42, 112–129.

    Article  Google Scholar 

  • Faltinsen, O., 1993. Sea Loads on Ships and Offshore Structures, Cambridge University Press.

    Google Scholar 

  • Grotmaack, R. and Meylan, M. H., 2006. Wave forcing of small floating bodies, J. Waterw. Port Coast. Ocean Eng., ASCE, 132(3): 192–198.

    Article  Google Scholar 

  • Hadžić, I., Hennig, J., Perić, M. and Xing-Kaeding, Y., 2005. Computation of flow-induced motion of floating bodies, Appl. Math. Model., 29(12): 1196–1210.

    Article  MATH  Google Scholar 

  • Harms, V. W., 1987. Steady wave-drift of modeled ice floes, J. Waterw. Port Coast. Ocean Eng., ASCE, 113(6): 606–622.

    Article  Google Scholar 

  • Hu, C. and Kashiwagi, M., 2009. Two-dimensional numerical simulation and experiment on strongly nonlinear wave–body interactions, J. Mar. Sci. Tech., 14(2): 200–213.

    Article  Google Scholar 

  • Huang, G. and Law, A., 2013. Wave-induced drift of large floating objects in regular waves, J. Waterw. Port Coast. Ocean Eng., ASCE, 139(6): 535–542.

    Article  Google Scholar 

  • Huang, G., Law, A. W. K. and Huang, Z., 2011. Wave-induced drift of small floating objects in regular waves, Ocean Eng., 38(4): 712–718.

    Article  MathSciNet  Google Scholar 

  • Kashiwagi, M., 2000. Non-linear simulations of wave-induced motions of a floating body by means of the mixed Eulerian-Lagrangian method, Proc. Inst. of Mech. Engrs. C: J. Mech. Eng. Sci., 214(6): 841–855.

    Google Scholar 

  • Koo, W. and Kim, M. H., 2004. Freely floating-body simulation by a 2D fully nonlinear numerical wave tank, Ocean Eng., 31(16): 2011–2046.

    Article  Google Scholar 

  • Longuet-Higgins, M. S., 1977. The mean forces exerted by waves on floating or submerged bodies with applications to sand bars and wave power machines, Proc. R. Soc. A. Math., Phy. Eng. Sci., 352, 463–480.

    Article  Google Scholar 

  • Ren, B., He, M., Dong, P. and Wen, H., 2015. Nonlinear simulations of wave-induced motions of a freely floating body using WCSPH method, Appl. Ocean Res., 50, 1–12.

    Article  Google Scholar 

  • Sueyoshi, M. and Kashiwagi, M. and Naito, S., 2008. Numerical simulation of wave-induced nonlinear motions of a two-dimensional floating body by the moving particle semi-implicit method, J. Mar. Sci. Tech., 13(2): 85–94.

    Article  Google Scholar 

  • Tanizawa, K., Minami, M. and Imoto, T., 2002. On the drift speed of floating bodies in waves, Proc. 12th Int. Offshore Polar Eng. Conf. (ISOPE), Kitakyushu, Japan.

    Google Scholar 

  • Wehausen, J. V., 1971. The motion of floating bodies, Annu. Rev. Fluid. Mech., 3(1): 237–268.

    Article  MATH  Google Scholar 

  • Yan, S. and Ma, Q. W., 2007. Numerical simulation of fully nonlinear interaction between steep waves and 2D floating bodies using the QALE-FEM method, J. Comput. Phys., 221(2): 666–692.

    Article  MathSciNet  MATH  Google Scholar 

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Authors and Affiliations

  1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China

    Ming He  (贺铭), Bing Ren  (任冰) & Da-hong Qiu  (邱大洪)

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  1. Ming He  (贺铭)
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  2. Bing Ren  (任冰)
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  3. Da-hong Qiu  (邱大洪)
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Corresponding author

Correspondence to Da-hong Qiu  (邱大洪).

Additional information

This research was financially supported by the National Natural Science Foundation of China (Grant No. 11272079) and the National Basic Research Program of China (973 Program, Grant No. 2011CB013702).

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He, M., Ren, B. & Qiu, Dh. Experimental study of nonlinear behaviors of a free-floating body in waves. China Ocean Eng 30, 421–430 (2016). https://doi.org/10.1007/s13344-016-0018-6

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  • DOI: https://doi.org/10.1007/s13344-016-0018-6

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