Research on Pile Foundation Scouring of Offshore Platform Based on CFD Numerical Simulation
The scouring of pile foundation may lead to the structural instability of offshore wind power platform.Therefore,it is necessary to research the scouring process of the current around the pile foundation and explore the scouring law under the different pile foundation diameters.In this paper,pile foundations with diameters of 2.4 m,3.5 m and 4.0 m are designed,and the multi-scale grid division of pile foundation and flow field is carried out.The problem of seabed scouring around single pile foundations with different diameters is studied through CFD experiments.The simulation experiment results show that when the diameter of pile foundation increases,the depth of scouring hole will increase if the velocity of scouring water remains unchanged.Based on the simulation experiment results,an empirical formula for predicting the scouring depth around the wind power pile foundation is proposed.
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