150000T油轮水动力及系泊系统性能计算分析
发布时间：2018-10-14 20:45
【摘要】：世界发展日新月异,能源的重要性越来越明显,而石油在能源中有着举足轻重的地位。陆地上的石油资源接近枯竭,人们已经逐渐把目光转向资源极为丰富的海洋。在海洋中的石油开采相对陆地来说要困难很多,对于海洋结构物的要求也更加严格。无论是国际间的石油运输,还是开采之后的运输,油轮在这个环节起着至关重要的作用。为保证船舶的正常工作及自存工况下的安全性,研究油轮在恶劣的海洋环境中的运动状态以及系泊缆张力响应都极为重要。在ANSYS-AQWA软件下,初步研究油轮的相关的水动力性能是必要的。首先是在软件水动力频域分析中,计算船舶的各种水动力参数,包括附加质量、阻尼,一阶和二阶波浪力响应以及船舶运动响应传递函数等。频域下计算的相关参数结果为后续船舶的时域分析提供了数据支持。利用频域分析模块计算结构弯矩、剪力的功能,采用设计波法,计算出使得船舶处于典型危险工况下的设计波参数,包括设计波的频率、浪向、相位等,从而可以得到水压力分布情况,进一步的为油轮强度分析做准备。根据频域计算的参数结果进行时域耦合分析。根据相关规范要求设计船舶系泊系统,初始设计方案为8根对称布置的悬链式系泊缆。考虑系泊缆的属性,对系泊系统和油轮运动耦合进行分析,计算出油轮在恶劣的自存海况下的运动响应和系泊缆张力响应并评估系泊缆的强度和系泊系统的定位能力是否符合要求。
[Abstract]:With the rapid development of the world, the importance of energy is becoming more and more obvious, and oil plays an important role in energy. Land oil resources are nearly exhausted, people have gradually turned to the extremely rich resources of the sea. The exploitation of oil in the sea is much more difficult than on land, and the requirements for marine structures are more stringent. Oil tankers play a vital role in both international oil transportation and after exploitation. In order to ensure the safety of ships in normal operation and self-storage conditions, it is very important to study the motion state of oil tankers in the harsh marine environment and the mooring cable tension response. Under ANSYS-AQWA software, it is necessary to study the hydrodynamic performance of tankers. Firstly, in the software hydrodynamic frequency domain analysis, various hydrodynamic parameters are calculated, including additional mass, damping, first and second order wave force response and ship motion response transfer function. The related parameters calculated in frequency domain provide data support for time domain analysis of subsequent ships. Using frequency domain analysis module to calculate the function of structural bending moment and shear force, the design wave parameters, including frequency, wave direction, phase and so on, are calculated by using design wave method. Thus, the distribution of water pressure can be obtained and further preparation for the strength analysis of oil tankers. The time domain coupling analysis is carried out according to the parameters calculated in frequency domain. The ship mooring system is designed according to the requirements of relevant codes. The initial design scheme is eight sling mooring cables with symmetrical arrangement. Considering the properties of mooring cable, the coupling of mooring system and tanker motion is analyzed. The motion response and mooring tension response of oil tankers under severe self-stored sea conditions are calculated and the strength of mooring cables and the positioning capability of mooring systems are evaluated.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U674.133.1
本文编号：2271591
[Abstract]:With the rapid development of the world, the importance of energy is becoming more and more obvious, and oil plays an important role in energy. Land oil resources are nearly exhausted, people have gradually turned to the extremely rich resources of the sea. The exploitation of oil in the sea is much more difficult than on land, and the requirements for marine structures are more stringent. Oil tankers play a vital role in both international oil transportation and after exploitation. In order to ensure the safety of ships in normal operation and self-storage conditions, it is very important to study the motion state of oil tankers in the harsh marine environment and the mooring cable tension response. Under ANSYS-AQWA software, it is necessary to study the hydrodynamic performance of tankers. Firstly, in the software hydrodynamic frequency domain analysis, various hydrodynamic parameters are calculated, including additional mass, damping, first and second order wave force response and ship motion response transfer function. The related parameters calculated in frequency domain provide data support for time domain analysis of subsequent ships. Using frequency domain analysis module to calculate the function of structural bending moment and shear force, the design wave parameters, including frequency, wave direction, phase and so on, are calculated by using design wave method. Thus, the distribution of water pressure can be obtained and further preparation for the strength analysis of oil tankers. The time domain coupling analysis is carried out according to the parameters calculated in frequency domain. The ship mooring system is designed according to the requirements of relevant codes. The initial design scheme is eight sling mooring cables with symmetrical arrangement. Considering the properties of mooring cable, the coupling of mooring system and tanker motion is analyzed. The motion response and mooring tension response of oil tankers under severe self-stored sea conditions are calculated and the strength of mooring cables and the positioning capability of mooring systems are evaluated.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U674.133.1
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