海流条件下中性缆缆形及张力的理论研究

文章考虑缆绳经受的法向与切向流体阻力，在自然坐标系下推导了任意海流中缆绳的动力学方程。建立了中性缆在均匀、线性及组合海流作用下缆形与张力的参数表达式。参数表达式给出了对应海流作用下缆形及张力的物理规律，从而为参数迭代求解时迅速收敛指明了数学途径。自行编制程序，算例的定量结果进一步验证了其物理规律，也表明在长缆绳下，忽略切向阻力在工程上是不合适的。

Theoretical study on the cable geometry and tension of neutral cable in current

The dynamic equations of the cable in different ocean currents are developed in the natural co-ordinate, the effects of normal and tangential components of the fluid drag are both considered. The parame-ter expressions for the cable geometry and tension of the neutral cable under the action of uniform, linear and combined current flow are established. The physical laws of the cable geometry and tension distribu-tion in different currents are obtained. Also, the mathematical approach to the fast convergence of the nu-merical integration is pointed out. Some typical examples are calculated by the self-compiled program. The quantitative results further verify the physical laws, and show that ignoring tangential resistance is not ap-propriate for long cable.