波浪作用下月池开口对钻井船水动力的影响  

Influence of Moon Pool Opening on Hydrodynamic Performance of Drillship in Wave Conditions

作　　者：宋文浩 李欣[1,2] 童波[3] SONG Wenhao;LI Xin;TONG Bo(Shanghai Jiao Tong University, a. State Key Laboratory of Ocean Engineering;b. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China;2. Marine Design ＆ Research Institute of China, Shanghai 200011, Chin)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学高新船舶与深海开发装备协同创新中心,上海200240 [3]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶工程》2018年第3期15-20,共6页Ship Engineering

基　　金：工信部第七代超深水钻井平台(船)创新专项课题三:第七代超深水钻井船开发

摘　　要：结合模型试验与频域数值计算结果,分析月池对船体水动力性能的影响,并对模型试验与数值计算的RAO、月池敞开和封闭的RAO、运动统计结果和附加质量系数进行对比。分析结果显示:月池开口会增大横摇和垂荡运动幅值,并且减小船体的横摇固有周期;当外部激励使月池发生共振时,月池内流体产生的附加质量会发生剧烈变化。因此,月池开口对船体水动力性能会产生一定负面影响,作业时,应当避免发生共振现象。Combining the model experiment and the numerical calculating result,the influence of moonpool on hydrodynamic performance of drillship is analyzed.The comparisons are done between the RAO of the model experiment and the numerical calculation,the RAO with or without moon pool opening,motion statistical result and additional mass coefficient.The comparing results show that the moon pool opening can increase the amplitude of the roll and heave as well as reduce the the natural period of roll.The additional mass of drillship changes drastically in the resonance condition.So the moon pool opening has a negative effect on the hydrodynamic performance of drillship.The resonance condition should be avoided during operation.

关 键 词：月池 数值计算 模型试验 水动力 附加质量 

分 类 号：U661.1[交通运输工程—船舶及航道工程]