Global performance of a KRISO semisubmersible multiunit floating offshore wind turbine: Numerical simulation vs. model test | Academic Article individual record

© The International Society of Offshore and Polar Engineers. The global performance of the KRISO square-type semisubmersible multiunit floating offshore wind turbine (MUFOWT) in irregular waves is numerically simulated by using a multiturbine floater-mooring coupled dynamic analysis program. The developed time-domain numerical-simulation tool is extended from the FAST–CHARM3D coupled dynamics program for a single turbine on a single floater. FAST has been developed by the National Renewable Energy Laboratory for years for the single unit. Recently, KRISO has designed and studied a square-type semisubmersible MUFOWT in which four 3 MW wind turbines are installed at each corner of a single floater. Additionally, 24 point-power-absorber-type linear-generator-based wave energy converters are set up, with six wave energy converters at each side of the platform. For verification, KRISO performed a series of model tests for this MUFOWT with 1:50 Froude scale. In this paper, the MUFOWT simulation program is used to reproduce KRISO’s model test results. In the fully-coupled multiturbine/hull/mooring dynamic simulations, the complete second-order difference-frequency wave forces are also included. The analysis results are systematically compared with the model test results, which shows reasonable correlation between them.

author list (cited authors)
Kim, H. C., Kim, K. H., Kim, M. H., & Hong, K.
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