大洋多金属结核1km海上开采实验系统扬矿管水平液动力分析和计算

大洋多金属结核1km海上开采实验系统的扬矿管所受水平液动力由多个参数决定. 本文从系统总体设计参数出发,得出了其他各种参数值,并根据Morison方程详细推导了海浪和海流的速度和加速度的表达式,最后采用数值积分的方法得出了液动力随时间和深度的变化曲线. 在同一水深处,总液动力随时间的变化规律接近于正弦(余弦)曲线;而在同一时刻,总液动力则随水深绝对值的增加而递减,在水深0*#m至水深-200*#m内,递减速度很快;总液动力最大值为3.790*#kN.

Analysis and calculation of the hydrodynamic force of lifting pipes in a 1 km pilot-scale mining system of polymetallic nodules

The hydrodynamic force of lifting pipes in a 1km pilot-scale mining system of polymetallic nodules is determined by many parameters. Based on the integrated design parameters of the 1km pilot-scale mining system, the suitable wave theory was selected and all kinds of parameters were presented. A numerical integration procedure was formulated for calculation of the hydrodynamic force according to the Morison equation. The relationship among the force, time and depth below ocean surface was finally studied. At the same depth below ocean surface, the total hydrodynamic force is varied with increasing time as a function of sine. While at the specified time, the total hydrodynamic force is decreased with increasing depth below ocean surface. The lapse rate is particularly fast from 0 to 200m in depth. The maximum of hydrodynamic force is 3.790kN.