拖船回转机动状态下的拖缆暂态分析  

Transient Behavior of Towed Cable during Ship Turning Maneuver

作　　者：王自发[1] 朱克强[1] 徐为兵[1] 张天宇[1] 张洋[1] 章浩燕[1] 

机构地区：[1]宁波大学海运学院,浙江宁波315211

出　　处：《船舶工程》2014年第1期24-28,共5页Ship Engineering

基　　金：宁波市学科项目(szxl1066);长江学者和创新团队发展计划资助项目(IRT0734);国家自然科学基金资助项目(11272160);浙江省新苗人才计划项目(2012R405038)

摘　　要：拖船直拖稳态定长回转过程中的拖缆暂态已有研究,大半径拖船回转,有Chapman大半径定长回转解法;小半径拖船回转,拖体轨迹是拖体深度随着时间波动的螺旋线形状,最终趋于Chapman稳态回转值。通过定义拖体轨迹与深度的单调波动关系,采用计算机三维数值模拟,提出了另一种确定拖船回转机动下拖缆暂态的Chapman理论大半径与小半径过渡值的新方法。得出某些结论对海洋工程海底目标确定有重要意义。There have been some researches on the dynamic behavior of a towed cable system. For large- radius ship turns, Chapman contributed a turning solution; for small-radius ship turns, the vehicle trajectory followed a corkscrew pattern with the vehicle depth oscillating about, decaying to the steady-state turning solution of Chapman. This paper defined a monotonic and oscillatory relationship between vehicle depth and trajectory, offered a new three-dimensional numerical simulation method to measure the transition radius between large-radius and small-radius behavior of towed cable during ship turning maneuver. Some conclusions are meaningful to target detection on sea bottom in ocean engineering.

关 键 词：拖缆 回转机动 稳态 临界半径 

分 类 号：U667.4[交通运输工程—船舶及航道工程]