Second-Order Motion Characteristics of a Semi-Submersible Platform in Waves

摘要

Second-order motion characteristics of a semi-submersible are investigated in regular waves. Higher-order boundary element method in frequency domain and finite element method in time-domain are applied to numerical analysis of nonlinear hydrodynamic force and motion characteristics of semi-submersibles in scope of potential theory. Various aspects of nonlinear effects on heave and roll of a semi-submersible were numerically investigated and some selected cases were compared with model test data.