浮式结构物系泊系统数值分析模块naoeFOAM-ms开发

发布时间：2017-12-30 19:12

本文关键词：浮式结构物系泊系统数值分析模块naoeFOAM-ms开发　出处：《上海交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着对海洋油气资源的勘探与开发逐渐向深海迈进，作为海工装备的浮式结构物起着越来越重要的作用。研究浮式结构物与其系泊系统的相互作用可为浮式结构物在波浪上的运动响应性能研究奠定基础，进而为浮式结构物的设计提供参考。本文以CFD为技术手段，以开源工具箱OpenFOAM为平台，以船舶与海洋工程CFD求解器naoe-FOAM-SJTU为基础，自主开发了系泊系统数值分析模块naoeFOAM-ms，扩展了该求解器在处理浮式结构物水动力学问题上的能力。该数值分析模块可同时应用静力学与动力学分析方法求解系泊系统，以满足不同的工程需求。该模块的加入为系泊系统与浮式结构物建立了联系，提供了分析二者相互作用的途径。同时，由于程序设计上原生的可扩展性，后续还可以方便地添加更多的系泊系统求解方法。通过将计算结果与其它数值结果和模型试验比较，验证了该模块中系泊系统求解程序的可靠性。并以二维浮式防波堤与深海半潜式钻井平台为例，应用naoe-FOAM-SJTU求解器计算结构物运动响应，分别采用静力学与动力学分析方法求解系泊系统，得到与试验吻合的结果，证明了naoe-FOAM-SJTU求解器在处理浮式结构物在波浪上的运动响应问题上的能力。在此基础上，针对同一形式的半潜式平台，，通过从不同链索分析方法、不同链索材料长度比例以及系泊系统同组内不同链索间夹角布置等三方面改变系泊系统参数，应用naoe-FOAM-SJTU求解器计算平台在波浪上的运动响应，考察平台运动响应变化，从而评估系泊系统参数变化对平台运动响应的影响。结果表明，系泊系统参数变化对平台各自由度运动响应影响程度不同，纵荡自由度所受影响较显著，通过选择合适的系泊系统参数可以在一定程度上改善该自由度运动响应性能。
[Abstract]:With the exploration and development of offshore oil and gas resources gradually to the deep sea forward, as the floating structure of marine engineering equipment plays an increasingly important role. The interaction of floating structures and mooring system for the motion of floating structures in waves on the response performance of laying the foundation, provide a reference for the design of then for the floating structures.
Based on the CFD technology, to open the toolbox of OpenFOAM platform, the ship and marine engineering CFD naoe-FOAM-SJTU solver based on the independent development of the mooring system of numerical analysis module of naoeFOAM-ms, extends the ability of the solver in the treatment of water dynamics of floating structures. The numerical analysis module can be simultaneously applied statics and dynamics analysis method for solving the mooring system, to meet the needs of different projects. Join the module connection for mooring system with floating structures, provides a means of interaction analysis of the two. At the same time, the program design of primary scalability, follow-up can easily add more solving method of mooring system compared with other numerical results and model test by the calculation results, verify the reliability of the mooring system solver in the module. And the two-dimensional floating breakwater breakwater With the deep sea semi submersible drilling platform as an example, the application of naoe-FOAM-SJTU solver to calculate the structure motion response, using static and dynamic analysis method for solving the mooring system, get the agreement with the experimental results proved that the naoe-FOAM-SJTU solver response ability on the question of floating structures in waves of the movement.
On this basis, according to the semi submersible platform in the same form, through different chain analysis method, different chain length of material proportion and mooring system within the same group of different chain angle between the three aspects of change arrangement of mooring system parameters, using naoe-FOAM-SJTU solver to calculate response platform in wave motion, change of the motion response of the platform, so as to assess the impact of changes in response to the movement of platform mooring system parameters. The results show that the change of system parameters on the response of the mooring platform for the freedom of movement to the influence degree of different degrees of freedom, surge affected significantly, by choosing appropriate parameters of the mooring system can improve the performance of response of the freedom movement in a certain extent.

【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U674.38

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