Prediction of dynamic response of semi-submersible floating offshore wind turbine using Morison based theory

摘要

A fully coupled nonlinear simulation tool (CAsT) using Morison based theory was developed to predict dynamic response of Floating Offshore Wind Turbine (FOWT). Performance of the simulation tool in prediction of dynamic response to sea states was validated through one water tank experiment in this paper. Besides, hydrodynamic coefficients were evaluated from numerical simulation and were validated with another water tank experiment. Significance of radiation damping, axial Froude-Krylov force on slender members and dynamic behavior of mooring system were investigated and clarified. In addition, systematic comparison of results from FAST and CAsT was carried out and discussed in this research.