封闭式综合集成桅杆风载分布特性研究

为了提高舰船的隐身性能,现代舰船已逐渐开始采用封闭式综合集成桅杆,因此研究典型封闭式综合集成桅杆的风载分布具有重要意义。利用计算流体力学软件对典型的正八面体封闭式综合集成桅杆风载分布进行数值模拟,研究了风向角为0°、12°及22.5°、雷诺数在2.92×106至1.55×107范围内桅杆的风载分布,分析平均压力系数、脉动压力系数及斯特哈尔数随雷诺数的变化规律,以及平均压力系数和脉动压力系数沿桅杆垂向和周向的分布规律。结果表明:平均压力系数和脉动压力系数均随雷诺数的增加而趋于稳定,且其沿桅杆垂向基本呈均匀分布而沿桅杆周向变化较大。

Research on wind loads distribution of integrated mast

Modern warship begins to adopt integrated mast to improve its stealth performance,which makes the research on wind loads distribution of the integrated mast becomes important.The wind loads distribution of typical octahedral integrated mast is simulated with computational fluid dynamics software.The wind loads distribution is studied with the wind angle of 0°,12° and 22.5°,and the Reynolds number ranges from 2.92×106 to 1.55×107.The variation of the average and fluctuating pressure coefficients and St with Re are analyzed,as well as the distribution of average and fluctuating pressure coefficients along the axial and circumferential direction of the mast.The results show that the average and fluctuating pressure coefficients tend to be stable with the increase of Reynolds number,and they distribute uniformly in the axial direction but change greatly in the circumferential direction of the mast.