摘要
海上风电场的基础冲刷问题危害着整体结构的耐久性和安全性。针对某海上风机四圆柱基础的冲刷问题开展数值模拟研究。采用SST k-ω湍流模型描述水流动力学,采用Exner方程描述水-泥沙交界面运动,采用浸入边界法描述水和泥沙的耦合作用。采用单桩冲刷算例验证了计算方法的准确性和可行性。对于风机的四圆柱基础冲刷问题,研究了0°和45°来流作用下的基础冲刷问题。模拟结果显示,4个圆柱基础均有不同程度的冲刷深度,上游圆柱产生的涡流场会引起下游圆柱基础的进一步冲刷。
The foundation scouring problem of offshore wind farms endangers the overall structural durability and safety.A numerical simulation study was conducted on the scouring problem of the four-cylinder foundation of an offshore wind turbine.The SST-kω turbulence model was used to simulate the flow dynamics,the Exner equation was used to simulate the motion of the water-sediment interface,and the immersed boundary method were used to simulate the coupling effect of water and sediment.The accuracy and feasibility of the calculation method were verified using a single pile scouring example.For the four-cylinder foundation scouring problem of wind turbines,the foundation scouring problem at flow incidence of 0°and 45°inflow was studied.The simulation results show that the scour depths can be observed on each of the four-cylinders'foundation,and that the vortex field from the upstream cylinder may cause further scour phenomenon on the downstream cylinder foundation.
作者
俞梅欣
杨皓然
朱艳
李小军
韩兆龙
YU Mei-xin;YANG Hao-ran;ZHU Yan;LI Xiao-jun;HAN Zhao-long(China Shipbuilding NDRI Engineering Co.,Ltd.,Shanghai 200063,China;Shanghai Research Centre of Ocean&Shipbuilding Marine Engineering,Shanghai 200063,China;Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《中国港湾建设》
2024年第1期13-17,60,共6页
China Harbour Engineering
基金
上海市优秀学术/技术带头人计划资助(23XD1434800)。
关键词
海上风电场
基础冲刷
数值模拟
offshore wind farms
foundation scour
numerical simulation