Structural Engineering and Mechanics

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Wave scattering among a large number of floating cylinders

  • Received : 2004.10.21
  • Accepted : 2005.06.13
  • Published : 2005.09.10
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Abstract

When a large number of identical cylinders are placed in an array with equal separation distance, near-resonant phenomena may occur between cylinders at critical frequencies, and cause large wave forces on each element of the array. In this paper, 64 truncated circular cylinders arranged in 4 rows and 16 columns are considered to check occurrence of near-resonant phenomena and performance of theoretical predictions based on the potential flow. Experiments are conducted in head waves to measure the wave elevation along the longitudinal centerline of the model, and measured results are compared with numerical ones. Attention is focused on the spatial variation of the wave amplitude around the first near-trapped-mode frequency.

Keywords

References

  1. Kagemoto, H. and Yue, D.K.P. (1985), 'Interactions among multiple three-dimensional bodies in water waves: An exact algebraic method', J. of Fluid Mechanics, 166, 189-209
  2. Kagemoto, H. and Fujino, M. et al. (1998), 'On the wave decay around a very large semisubmersible type floating structure (2nd Report)', J. of the Society of Naval Architects of Japan, 184, 271-282
  3. Kagemoto, H., Murai, M., Saito, M., Molin, B. and Malenica, S. (2002), 'Experimental and theoretical analysis of the wave decay along a long array of vertical cylinders', J. of Fluid Mechanics, 456, 113-135
  4. Kashiwagi, M. (2000), 'Hydrodynamic interactions among a great number of columns supporting a very large flexible structure', J. of Fluids and Structures, 14, 1013-1034 https://doi.org/10.1006/jfls.2000.0306
  5. Maniar, H.D. and Newman, J.N. (1997), 'Wave diffraction by a long array of cylinders', J. of Fluid Mechanics, 339, 309-330 https://doi.org/10.1017/S0022112097005296
  6. Newman, J.N. (2001), 'Wave effects on multiple bodies', Hydrodynamics in Ship and Ocean Engineering, edited by M. Kashiwagi, RIAM, Kyushu Univ., 3-26

Cited by

  1. A numerical tool for the frequency domain simulation of large arrays of identical floating bodies in waves vol.148, 2018, https://doi.org/10.1016/j.oceaneng.2017.11.026
  2. Near Trapped Modes in Long Array of Truncated Circular Cylinders vol.145, pp.1, 2019, https://doi.org/10.1061/(ASCE)WW.1943-5460.0000495
  3. Wave Exciting Force Maximization of Truncated Cylinders in a Linear Array vol.13, pp.9, 2005, https://doi.org/10.3390/en13092400