摘要
大型深水工程往往面临水深、浪大以及流急等复杂自然条件,将受到巨大的水平波流力,在工程设计中需准确考虑波流力的大小.通过在波流水槽进行圆柱、方柱和矩形柱波流力系列试验,进行大尺度柱状结构物波流荷载研究,同时建立数学模型,应用边界元法求解大尺度柱体上的波浪荷载,编写了Fortran程序计算波浪力,运用柱体绕流理论计算水流力.对比分析试验结果和数值计算结果提出了波流力工程计算方法:对于深水大尺度柱状结构物波流力可由波浪力线性迭加水流力再乘以1.04得到,计算中波浪要素采用水流影响下的要素,水流力采用柱体绕流求得.按此方法计算波流力,并与物理模型试验结果进行对比,两者误差较小,满足工程设计的精度要求.
Large scale deepwater structures often face some complex natural conditions such as deepwater, large wave height and strong current, and are subject to considerable horizontal wave-current forces. It is necessary to accurately consider the size of the wave-current forces in the engineering design. A series of wave-current forces experiments for cylindrical, square columns and rectangular columns are carried out in the wave-current flume. At the same time, boundary element method for solving the wave loads on a large scale cylinder is used, and the preparation of Fortran program is made. Comparing the model results with the calculated values, an engineering method for calculation of the wave-current forces is developed ： for deepwater large scale cylinder structures, wave- current forces can be obtained by the wave force linear superposition current force multiplied by 1.04, wave element is considered under the influence of current, and current force is calculated by flow around cylinders theory. By using this method to calculate wave-current force, and comparing the physical model results, the error is relatively small, and the model accuracy satisfies the requirement of engineering design.
出处
《水利水运工程学报》
CSCD
北大核心
2013年第3期65-70,共6页
Hydro-Science and Engineering
关键词
大尺度
柱状结构物
波流力
势流理论
large scale
cylinder structures
wave-current force
potential theory
