Abstract
ABSTRACT Gravity cage model is utilised to assess the influence of different mooring variables, (buoy buoyancy, frame line length and depth) on the dynamic performance and mooring tension of its grid mooring system. Numerical model's validity is confirmed using Morison equation and lumped mass method, followed by an analysis of how these variables impact cage motion and mooring tension under diverse environmental conditions. The findings indicate that enlarging the frame line length can equalise tension distribution within the mooring system and minimise peak tension. Optimum buoyancy is pivotal for maintaining equilibrium between maximum tension and cage displacement under wave-load conditions. When waves and currents work together, insufficient buoyancy and excessively deep frame lines may cause significant gaps between the cage and water surface, potentially leading to fish escape. Finally, further research comparing the tension distribution of each anchor line in a 2×1 cage group with the cages’ displacement.
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