Currently,when using the CFD method to calculate the motion of floating structures and the forces on the mooring lines,the main approach is to use a static mooring model,but the static mooring model cannot accurately calculate the tension of the mooring lines.Based on the STAR-CCM+platform,using the overset grid technique,the DFBI multi-body motion model,and the VOF method to capture the free surface,a numerical simulation study was conducted on a semi-submersible floating wind turbine platform through solving the N-S equations.A dynamic mooring model was also embedded in the form of data coupling iteration,which can fully consider the mooring cable tension,hydrodynamic loads,and seabed contact forces.The calculations show that compared to the static mooring model,the motion response of the semi-submersible platform calculated by the coupling method of CFD and dynamic mooring model is similar with it,but the mooring line tension response is quite different,and the calculation results based on the dynamic mooring model are more consistent with the experimental results.The established coupling method has high calculation accuracy and small errors compared to the experiment,providing an efficient and accurate numerical method for the design of floating wind turbines and other floating structures.
floating wind turbineOC4computational fluid dynamicsdynamic mooring model
维普
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