深水钻井船动力定位时域仿真分析研究

发布时间：2018-01-25 08:17

本文关键词： 深水钻井船动力定位时域分析环境载荷数值计算　出处：《中国舰船研究院》2014年硕士论文　论文类型：学位论文

【摘要】：随着海洋油气开发走向深水，动力定位技术正越来越多地应用到海洋工程装备之中。特别是对于具备超深水作业能力的钻井船，动力定位技术已成为其成功设计、建造和使用的一项关键技术。本论文结合国家工业和信息化部“3000米水深钻井船自主研发”科研项目，，开展了深水钻井船动力定位时域仿真分析研究工作。论文研究过程中，重点针对深水钻井船的船型和作业特点，围绕着环境载荷数值分析方法和动力定位时域仿真分析方法进行了深入研究。首先，论文对动力定位时域仿真分析方法进行了研究。论文深入分析了动力定位系统时域仿真原理，研究了运动方程的建立、环境载荷的模拟和推力系统的反馈控制方法。在此基础上，研究并归纳了应用SIMO软件进行动力定位时域模拟的分析流程，并进一步分析了钻井船隔水管的计算方法。论文研究并建立了适用于深水钻井船动力定位时域仿真分析的方法与流程。然后，论文从对钻井船动力定位影响最大的风载荷和流载荷入手，深入研究了风载荷和流载荷的CFD分析方法。论文研究了CFD的理论基础，分析并总结了适用于钻井船风载荷和流载荷数值计算的湍流模式和壁面函数。应用论文研究方法，对一艘深水钻井船的风载荷和流载荷进行了数值分析，并与模型试验和经验公式的分析结果进行了对比，验证了论文研究方法的可靠性。同时，针对钻井船的特点，论文进一步分析了钻井船月池对流载荷的贡献，以及钻井船上部设备模块形状效应和遮蔽效应对风载荷的影响。最后，基于前述研究方法，对一艘深水钻井船进行了动力定位时域仿真分析。通过实例分析，研究了不同的Kalman增益和控制增益对动力定位的影响，总结了不同海况条件下系统参数的调整机制。论文进一步结合挪威船级社规范中的ERN参数计算要求，分析了该钻井船在最不利海况条件下的定位能力。论文最后还分析总结了隔水管系统对钻井船动力定位性能的影响。通过上述各项研究工作，论文初步建立了准确有效的钻井船动力定位时域仿真分析流程，完善了深水钻井船动力定位能力的分析手段。
[Abstract]:With the development of offshore oil and gas into deep water, dynamic positioning technology is more and more used in marine engineering equipment, especially for drilling vessels with ultra-deep water operation capacity. Dynamic positioning technology has become a key technology in its successful design, construction and application. The dynamic positioning of deep-water drilling ship is simulated and analyzed in time domain. In the course of the research, the emphasis is put on the ship type and operation characteristics of deep-water drilling ship. The numerical analysis method of environmental load and the time domain simulation analysis method of dynamic positioning are studied in detail. Firstly, the paper studies the time-domain simulation and analysis method of dynamic positioning, and deeply analyzes the time-domain simulation principle of dynamic positioning system, and studies the establishment of motion equation. Based on the simulation of environmental load and the feedback control method of thrust system, the analysis flow of time-domain simulation of dynamic positioning with SIMO software is studied and summarized. Furthermore, the calculation method of drilling vessel riser is analyzed, and the method and flow of time domain simulation for dynamic positioning of deepwater drilling vessel are studied and established in this paper. Then, starting with the wind load and flow load, which have the greatest influence on the dynamic location of drilling ship, the paper deeply studies the CFD analysis method of wind load and flow load, and studies the theoretical basis of CFD. The turbulence model and wall function suitable for numerical calculation of wind load and flow load of drilling ship are analyzed and summarized. The wind load and flow load of a deep water drilling ship are analyzed numerically by using the research method in this paper. Compared with the results of model test and empirical formula, the reliability of the research method is verified. At the same time, according to the characteristics of the drilling ship, the contribution of the convection load of the lunar pool of the drilling ship is further analyzed. And the effect of shape effect and shielding effect on wind load. Finally, based on the above research method, the dynamic positioning of a deep-water drilling ship is simulated in time domain. The effects of different Kalman gain and control gain on the dynamic positioning are studied by an example. The adjustment mechanism of system parameters under different sea conditions is summarized, and the calculation requirements of ERN parameters in the Norse Classification Society Code are further combined in this paper. The positioning ability of the drilling vessel under the most adverse sea conditions is analyzed. Finally, the influence of the riser system on the dynamic positioning performance of the drilling vessel is analyzed and summarized. Through the above research work, the paper preliminarily establishes the accurate and effective time domain simulation analysis flow of the dynamic positioning of the drilling ship, and improves the analysis method of the dynamic positioning capability of the deep-water drilling ship.
【学位授予单位】：中国舰船研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U674.381;U664.82

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