摘要
锚在水中的阻力系数、平衡深度和平衡速度等沉降特性对于锚固力计算、船舶稳定性分析和着锚地管缆埋深设计等具有重要意义。本文围绕霍尔锚在水中自由下落时的拖曳阻力系数,通过理论分析和物理模型试验,提出了经验计算公式,结果显示阻力系数与锚质量和下落深度呈指数函数关系。不同航道对应的代表性船型的锚,其最小平衡下落深度大于航道水深,在航道内的触底速度必将小于平衡下落速度。
The settlement characteristics of anchor in water,such as drag coefficient,equilibrium depth and equilibrium velocity,are of great significance to the calculation of anchorage force,the analysis of ship stability and the design of buried depth of submarine pipe and cable.In this paper,an empirical formula for calculating the drag coefficient of the Hall anchor when it falls freely in water is proposed through theoretical analysis and physical model test.The results show that it has an exponential function relationship with water depth and anchor mass.For the anchors of representative ship types corresponding to different channels,the minimum equilibrium depth is greater than the channel depth,and the actual touchdown velocity in the channel will be less than the equilibrium velocity.
作者
孙永强
李瑞斌
王闻恺
范联铭
SUN Yongqiang;LI Ruibin;WANG Wenkai;FAN Lianming(China Waterborne Transportation Research Institute,Beijing 100088,China)
出处
《海洋工程装备与技术》
2024年第3期31-35,共5页
Ocean Engineering Equipment and Technology
关键词
霍尔锚
阻力系数
平衡水深
触地速度
Hall anchor
drag coefficient
equilibrium depth
touchdown velocity
