Abstract

The paper presents the results of model scale experiments on horizontal interlaced, multi-layer, moored floating pipe breakwater (HIMMFPB). The studies are conducted with breakwater models having five layers, wave steepness, Hi/L (Hi is incident wave height and L is incident wave length) varying from 0.0066 to 0.0464 and relative spacing, S/D (S is the horizontal spacing of pipes and D is diameter of pipe) of three. The forces in the seaward side mooring are measured and analyzed by plotting non-dimensional graphs depicting the variation of force parameterf/γW2 (f is force in the mooring per unit length of the breakwater, γ is weight density of seawater) with Tn/T (Tn is natural time period of breakwater and T is wave period) relative time of breakwater, and for various values of wave steepness. It is observed that the force in the seaward side mooring decreases with increase in relative time period for the range of wave steepness values considered in the present experimental studies. The experimental results also reveal that the forces in the seaward side mooring increases as relative wave steepness increases.

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