Numerical Study on Hydrodynamic Characteristics of Moored Offshore Floating Platform

A two-way fluid-structure interaction model and a linear elastic cable model were established based on the moving particle semi-implicit (MPS) method. The motions of the moored offshore floating platform in regular waves were analyzed by numerical simulations. The hydrodynamic characteristics of the moored floating platform in different mooring types were investigated systematically, and the results conclude that the surge, heave and pitch of the platform and the force of the mooring cables all show a variation of trigonometric function in two-dimensional cases. Furthermore, it can effectively control the surge of the platform and reduce the heave when the number of mooring cables increases. The uneven forces to the platform could be avoided on the condition that the mooring positions were symmetrical to the mass center of the platform, which would decrease the swing angles of the platform.