封闭式综合集成桅杆风载特性实验研究

根据相似原理，对正八边形封闭式综合集成桅杆进行水池拖曳实验研究其流体动力特性，试验测量了桅杆表面的压力，分析总结了平均压力系数随雷诺数的变化规律；平均压力系数、脉动压力系数沿桅杆轴向和周向的分布规律；斯特哈尔数随雷诺数、攻角等参数的变化规律。结果表明：平均压力系数随雷诺数的增加而趋于稳定，且其沿桅杆轴向基本均匀分布而沿桅杆周向变化较大。实验得出的结论对全封闭式综合集成桅杆的结构设计具有重要的参考作用。

Experimental research on wind-load characteristics of integrated mast

According to similarity theory, a towing experiment was conducted on the octagonal integrated mast to investigate its hydrodynamic characteristics. In the experiment, the pressure was measured on the surface of the mast, and the regularities of the following contents were analysed: the average pressure coefficient varying with Reynolds number, the distribution of average and fluctuating pressure coefficients in the axial and circumferential directions of the mast, and the Strouhal number varying with Reynolds number and attack angle ,etc. The results show that the average pressure coefficient tends to be stationary with the increase of Reynolds number, and it distributes uniformly in the axial direction but changes greatly in the circumferential direction.