8000 m^3耙吸式挖泥船动力定位系统时域模拟与模型试验  

Numerical Research and Model Test on the Dynamic Positioning System of a 8 000 m^3 Drag Suction Dredger

作　　者：朱一鸣[1] 王磊[1] 张涛[1] 刘翰林[1] ZHU Yi-ming WANG Lei ZHAN Tao LIU(State Key Laboratory of Ocean Engineering, Collaborative Ship and Deep-Sea Exploration, Shanghai Jiaotong Univers nnova Han-lin tion Center for Advanced ity, Shanghai 200240, Chin)

机构地区：[1]上海交通大学海洋工程国家重点实验室,高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《实验室研究与探索》2016年第9期4-9,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(51179103);国家重点基础研究发展计划项目(2013CB036103)

摘　　要：针对耙吸式挖泥船动力定位系统,以某8 000 m^3耙吸式挖泥船为研究对象,分析其动力定位系统在模拟海况下的定位能力与特点,构建出动力定位时域模型。对挖泥船在各种海况下的实时运动进行时域模拟分析,得到该挖泥船的偏移半径时历和功率消耗时历,并进行相关模型试验。时域模拟与模型试验结果表明,该挖泥船动力定位系统仅可在较小艏向角范围内完成有效定位,由于舵转角的限制,螺旋桨无法在较大艏向角的情况下提供足够的转船力矩完成定位。通过模型试验与时域模拟结果的分析与比较,为动力定位时域模拟程序进一步优化提供参考。The research focuses on the dynamic positioning system on a 8 000 m^3 drag suction dredger and builds the model of low frequency motion equation and model of thruster system which leads to a time domain simulation for analyzing the dynamic position system. The environmental loads include wind,wave and current. By these,the horizontal offset and power consumed as well as their statistic values can be analyzed. At the same time,model test is also conducted to verify the results The computed results agree well with test data. The results of simulation and model test show that the dredger can keep its state in certain environment. The distribution of thrusters may not provide enough moment to help the vessel keep its state. The result can be easily introduced into engineering practice and provide designers with useful information when one is designing a dynamic positioning system on a drag suction dredger.

关 键 词：耙吸式挖泥船 动力定位系统 时域模拟 模型试验 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]