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 (H i =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 /γW 2 (f s =Sea side Mooring force, γ=specific weight of water) & f l /γW 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 /γW 2 and f l /γW 2 with W/L for H i /d varying from 0.06 to 0.400.

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