International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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Peak mooring forces in the horizontal interlaced multi-layered moored floating pipe breakwater

  • Mane, Vishwanath (Department of Applied Mechanics and Hydraulics, National Institute of Technology Karnataka) ;
  • Rajappa, Sacchi (Department of Applied Mechanics and Hydraulics, National Institute of Technology Karnataka) ;
  • Rao, Subba (Department of Applied Mechanics and Hydraulics, National Institute of Technology Karnataka) ;
  • Vittal, Hegde A. (Department of Applied Mechanics and Hydraulics, National Institute of Technology Karnataka)
  • Published : 2011.06.30
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Abstract

Present study aims to investigate the influence of relative breakwater width W/L (W=width of breakwater, L=wavelength), wave steepness $H_i/gT^2$ (Hi=incident wave height, T=wave period) and relative wave height d/W (d=water depth) on forces in the moorings of horizontal interlaced multi-layered moored floating pipe breakwater (HIMMFPB) model. Studies were conducted on scaled down physical models having three layers of Poly Vinyl Chloride (PVC) pipes, wave steepness $H_i/gT^2$ varying from 0.063 to 0.849, relative width W/L varying from 0.4 to 2.65 and relative spacing S/D=2 (S=horizontal centre-to-centre spacing of pipes, D=diameter of pipes). Peak mooring forces were also measured and data collected is analyzed by plotting non-dimensional graphs depicting variation of $f_s/{\gamma}W^2$ ($f_s$=Sea side Mooring force, ${\gamma}$=specific weight of water) & $f_l/{\gamma}W^2$ ($f_l$=Lee side Mooring force) with $H_i/gT^2$ for d/W varying from 0.082 to 0.276 and also variation of $f_s/{\gamma}W^2$ and $f_l/{\gamma}W^2$ with W/L for $H_i$/d varying from 0.06 to 0.400.

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References

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