Numerical Study on the Mooring Force in an Offshore Fish Cage Array

The mooring force in a fish cage array subjected to currents and waves is investigated using the finite element method. Firstly, numerical model of with six gravity cages built by Ansys/APDL. Collars bottom rings are simulated pipe beam elements while rest structure link elements, including net cables. Thus, weight hydrodynamic load on cables can be considered. initial shape ropes calculated based dynamics. Since each component slender array, Morison equation used calculate load. Secondly, forces assessed for system different sea states. locations maximum parts found. mean values amplitudes calculated. main have under all increase current velocity wave height. When attack angle 0° 90°, two adjacent bridle do not play role pulling together. One pulled tight other one slack.