海上风电四桩导管架基础局部冲刷数值模拟研究OA

Through a comparative analysis of China domestic and international empirical formulae for the pile foundation scouring phenomena,it was identified that the existing formulations predominantly derived from the single-pile experimental data,thus their application has certain limitations in predicting the scour patterns for a complex structure such as quad-pile jacket foundation.CFD method was employed to investigate the local scouring characteristics of quad-pile jacket foundation for offshore wind turbines,and the numerical model was verified by using the flume test data.The numerical simulation results revealed that the maximum scouring depth of the quad-pile jacket foundation occurred at the upstream edge of the front pile,with inter-pile coupling effects significantly intensifying the sediment transport among the piles,and the overall scouring magnitude of the quad-pile structure exceeding that of single-pile structure.These findings provided technical reference for the study of similar foundation scouring phenomenons.