Offshore Code Comparison Collaboration Continuation (OC4), Phase I – Results of Coupled Simulations of an Offshore Wind Turbine with Jacket Support Structure

摘要

In this paper, the exemplary results of the IEA Wind Task 30 “OffshoreCode Comparison Collaboration Continuation” (OC4) Project – Phase I,focused on the coupled simulation of an offshore wind turbine (OWT)with a jacket support structure, are presented. The focus of this taskhas been the verification of OWT modeling codes through code-to-codecomparisons. The discrepancies between the results are shown and thesources of the differences are discussed. The importance of the local dynamicsof the structure is depicted in the simulation results. Furthermore,attention is given to aspects such as the buoyancy calculation and methodsof accounting for additional masses (such as hydrodynamic addedmass). Finally, recommendations concerning the modeling of the jacketare given.