Wave run-up is one of the most important and effective parameters in designing semi-submersible platforms. Besides unforeseen effects on the movements and response of the platform, wave run up can also cause slamming forces to be exerted on the lower deck of the platform. Therefore, at the first stages of this plan, before running tests on the model of the platform, numerical methods are usuall...

The automatic positioning control of mooring system for deepwater semi-submersible platform has become a key issue in the research and development field of deep-sea resources. The DualStage Actuator (DSA) proposed in this paper can replace the single actuator to achieve the high speed and high precision positioning by cooperative control. The relative model and control algorithm of motion traje...

A prediction method, based on the Morison equation as well Froude-Krylov formula, is presented to simulate loads acting columns and caissons of semi-submersible platform induced by Internal Solitary Wave (ISW) respectively. Combined with experimental results, empirical formulas drag inertia coefficients in can be determined a function Keulegan–Carpenter (KC) number, Reynolds number (Re) upper l...