TOWED CABLE BEHAVIOR DURING SHIP TURNING MANEUVERS
TOWED CABLE BEHAVIOR DURING SHIP TURNING MANEUVERS
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DOI：
10.1016/0029-8018(84)90010-6
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发表时间：
1984-01-01
影响因子：
5
通讯作者：
CHAPMAN, DA
中科院分区：
文献类型：
--
作者：
CHAPMAN, DA
动态和稳态电缆仿真的结果用于表明牵引系统在进入转弯时可以以两种不同方式中的任何一种运行。在大半径转弯时，系统保持其直牵引平衡配置，但形式略有扰动。在小半径转弯时，系统有效地崩溃，导致鱼深度和缆索张力大幅增加。其中包含一个公式，通过该公式可以快速计算出不会导致塌陷的近似最小转弯半径。无量纲表格给出了当船舶保持圆形航向时缆索采用的平衡配置的详细信息。通过图表可以轻松计算出二维缆索轮廓的横向和纵向扰动衰减的时间常数。这些可用于估计牵引系统在操纵后恢复平衡所需的时间。稳态配置和时间常数的方程推导包含在附录中。
The results of dynamic and steady-state cable simulations are used to show that a towed system can behave in either of two different ways on entering a turn. In a large radius turn the system maintains its straight-tow equilibrium configuration but in a slightly perturbed form. In a turn of small radius the system effectively collapses resulting in a large increase of fish depth and cable tension. A formula is included by which the approximate minimum radius of turn that does not precipitate collapse can be quickly calculated.Non-dimensional tables are presented giving details of the equilibrium configuration adopted by the cable when the ship maintains a circular course.Graphs are presented from which the time constants for the decay of lateral and longitudinal disturbances of 2-D cable profiles can be easily calculated. These can be used to estimate the time taken for a towed system to return to equilibrium following a manoeuvre.The derivation of the equations for the steady-state configurations and the time constants are included in appendices.