Transactions of Nanjing University of Aeronautics & Astronautics
Special Issue for Wind Turbine
A CFD-BASED LOAD CALCULATION METHOD FOR MONOPILE SUPPORT CONFIGURATION OF OFFSHORE WIND TURBINE
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Abstract:
In this paper, an unsteady load calculation method for the support configuration of a monopile-supported offshore wind turbine is developed based on Fluent software platform. Firstly, the water wave is generated by imposing the inlet boundary conditions according to the exact potential flow solution. Then the wave evolution is simulated by solving the unsteady incompressible N-S equations coupled with the volume of fluid method. For the small amplitude wave with reasonable wave parameters, the numerical wave agrees well with the given wave model. Finally, a monopile support configuration is introduced and a CFD-based load calculation method is established to accurately calculate the unsteady load under combined action of wave and wind. The computed unsteady wave load on a small-size monopile support located in the small amplitude wave flow coincides with the Morison formula. The load calculations are also performed on a large-size monopile support and a monopile-supported offshore wind turbine under combined action of small amplitude wave and wind.
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Clc Number:
V211.3；V211.41
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