Title of Paper:Hydrodynamic Performance of a Novel Floating Foundation for an Offshore Wind Turbine Under a Storm Condition

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Date of Publication:2020-03-01

Journal:INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING

Included Journals:SCIE

Volume:30

Issue:1

Page Number:120-128

ISSN No.:1053-5381

Key Words:Offshore wind energy; floating foundation; wind turbine; integral damping plate; FAST

Abstract:A novel semi-submersible platform, referred to as HexaSemi, is proposed with a completely new designed heave plate. Compared with the WindFloat-type design, the new heave plate has a single hexagonal shape with a moonpool. From a structural point of view, its integral design can increase the integrity of the structure. In this paper, we mainly study its hydrodynamic performance for an offshore wind turbine. A numerical model is set up to simulate the motion characteristics of the floating wind turbine system, based on WADAM, Star-CCM+, and FAST. The comparative analysis of HexaSemi and WindFloat-type platforms under the storm condition is conducted and discussed. It is found that the integral design can increase the viscous hydrodynamic damping and reduce the heave response and the mooring cable force.