Dynamic Response Computation of Single-Point Mooring of Product Tanker Based on AQWA

This paper took the product tanker at sea and its mooring positioning system as the research object and used the time-frequency domain method to calculate the movement of the product tanker. In the three-dimensional potential flow theory, a single-point mooring system was established as a numerical model in the ANSYS Workbench. The frequency-domain computing module was to analyze the hydrodynamic response of the tanker under the unit regular waves, the dynamic response amplitude operators (RAOs) of the tanker, and the motion conditions under different frequency distributions. The time-domain computing module was to analyze the response of a single-point mooring system under the actions of wind, wave, and current. Setting the mooring point, pretension, layout, mooring radius, and other parameters, of the mooring product tanker was calculated lasted 1 hour for the time-domain coupling analysis under the extreme offshore environment. The tension of each cable was compared with the minimum breaking strength of the mooring cable to determine its safety.