Floating
Wind Turbine
Various types of offshore
wind turbines are designed for large-scale industrial application. Prediction
of the loads on and motions of a floating offshore wind turbine (FOWT) system
under wave impact and large wind is of great importance for safety and
optimization design.
(a) Conceptual
design,
(b) Experimental investigation (by Dr. Sueyoshi Makoto),
Fig. 1 One
type of FOWT platform designed by RIAM, Kyushu University.
RIAM-CMEN has been developed
for strongly nonlinear ship-wave interaction and other free surface problems by
Hu and his colleges in RIAM, Kyushu University. However, it is found that the
simulation of offshore platform including wind turbine requires much finer
resolution of the grid. One purpose of this research is to improve RIAM-CMEN to
be able to treat those slender structures accurately. Since a large number of
slender structures may generate large buoyant and viscous forces.
(a)
Surge
(b) Heave
(c) Pitch
Fig. 2 Comparison of RAO between CFD and experiment for the platform.
Fig. 3 Computed free surface profiles for 
, 
, platform
only.
Fig. 4 Computed velocity field for the case with wind turbines.
Reference
C. Hu*, C. Liu,
Development of Cartesian grid method for simulation of violent ship-wave
interactions, Journal of Hydrodynamics, (2016), 28(6): 1003-1010.
C. Hu*, M. Sueyoshi, C. Liu, et al. Hydrodynamic Analysis of a
Semi-Submersible Type Floating Wind Turbine, Journal of Ocean and Wind Energy,
(2014); 1: 202-208.
C. Liu, C. Hu, CFD Simulation
of a Floating Wind Turbine Platform in Rough Sea Conditions, The
24th International Ocean and Polar Engineering Conference,
Busan, Korea, 2014.
C. Hu, M. Sueyoshi, C. Liu, Y. Liu, Hydrodynamic Analysis of a
Semi-Submersible Type Floating Wind Turbine, The 11th Pacific/Asia
Offshore Mechanics Symposium, Shanghai, China, 2014.
C. Hu, M. Sueyoshi, C. Liu, et al. Numerical and Experimental
Study on a Floating Platform for Offshore Renewable Energy, ASME
32nd International Conference on Ocean, Offshore and Arctic Engineering,
Nantes, France, 2013.
C. Liu, C. Hu, CFD Numerical
Simulation for Offshore Wind Turbine and Floating Platform, Proceedings
of the 18th Conference on Computational Engineering and Science(第18回計算工学講演会), Tokyo, Japan, 2013.
C. Liu, C. Hu, Numerical
simulation of the motion of floating wind turbine, The 7th International
Symposium on the East Asian Environmental Problems, Fukuoka, Japan,
2013.
C. Hu, C. Liu,
Parallel Simulation of RIAM-CMEN for Strongly Nonlinear Wave-Ship Interaction, 2nd
International Conference on Violent Flows, Nantes, France, 2012.