Global Performance of a KRISO Semisubmersible Multiunit Floating Offshore Wind Turbine: Numerical Simulation vs. Model Test Academic Article uri icon


  • 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 FASTCHARM3D 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 KRISOs 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.

published proceedings

  • International Journal of Offshore and Polar Engineering

author list (cited authors)

  • Kim, H., Kim, K., Kim, M., & Hong, K.

citation count

  • 9

complete list of authors

  • Kim, Hyoung-Chul||Kim, Kyong-Hwan||Kim, Moo-Hyun||Hong, Keyyong

publication date

  • March 2017