共查询到18条相似文献,搜索用时 937 毫秒
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针对500年一遇的极端海况条件,对15万吨深水单点系泊系统FPSO的运动响应和系泊线受力特性进行了研究,为FPSO后续的基本设计和详细设计提供技术分析依据.基于水动力计算软件AQWA和ORCAFLEX,分别研究了500年一遇海况波浪主控环境条件、风主控环境条件、流主控环境条件对15万吨深水单点系泊FPSO运动响应的影响.计算结果表明:压载状态下运动响应幅值普遍大于满载状态下的运动响应幅值,波浪主控环境条件对FPSO运动响应的影响要明显大于风流主控环境条件,且风浪流成夹角作用时FPSO运动响应更大. 相似文献
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圆筒型FPSO作为一种新型海洋工程装备,逐渐被应用于全球海洋油气资源的开发。该文以适用于南海深水油气田开发的圆筒型FPSO为研究对象,基于三维势流理论和莫里森(Morison)方程,采用Sesam软件建立圆筒型FPSO的湿表面模型和水动力计算模型,并对圆筒型FPSO在波浪中的频域运动响应特性进行计算,将载重量相近的圆筒型FPSO与船型FPSO的纵摇、横摇和垂荡运动响应进行对比研究,结果表明圆筒型FPSO的运动特性优于船型FPSO。该文同时也对不同船体直径、阻尼板直径、船体吃水以及环境条件重现期下的圆筒型FPSO垂荡运动响应进行研究,研究结果对于圆筒型FPSO的总体设计具有重要指导作用。 相似文献
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超大型FPSO原油质量分布模拟与水弹性响应研究 总被引:1,自引:1,他引:0
FPSO在近海油气田开发中得到了越来越广泛的应用.大多数在渤海海域服役的FPSO工作在浅水海域.主尺度大与水深吃水小,直接导致FPSO水动力特性与深水条件下船舶的水动力特性有较大区别,因此采用水弹性理论研究超大型FPSO在浅水中的运动与波浪诱导载荷响应具有重要意义.浅水超大型FPSO满载时原油重量将近占载重量的80%,因此如何正确模拟原油重量分布对干结构的固有频率、广义质量和振型的计算非常重要.本文建立了基于三维水弹性理论的数值模型,开发了有限水深复合格林函数的数值计算程序模块,对一艘300K DWT FPSO在特定水深海况下的运动与波浪载荷响应进行了研究;同时采用三种方法模拟了原油质量分布.计算结果表明,不同的原油质量分布模拟方法对水弹性计算分析影响很大. 相似文献
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以某典型转塔式FPSO为研究对象,利用大型海洋工程水动力及时域耦合分析软件AQWA对FPSO及其系泊系统进行相关计算比较分析;首先通过ANSYS建模并且划分网格,然后通过AQWA-LINE,应用势流理论进行水动力分析,并分别选择914.4m、1800m、3000m作业水深,进行相应的静力计算、运动响应对比分析以及锚链张力的对比计算,得出FPSO的静力、运动响应以及锚链张力随水深变化的规律。 相似文献
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在BZ25-1油田FPSO上采用了燃气轮机发电机组加带补燃的废热回收装置的电热站形式,本文介绍了燃气轮机发电机组和废热回收装置装机容量的确定过程,及热站补燃负荷的确定过程,并对油田的伴生气量进行了分析. 相似文献
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针对乌江思林、沙沱两座升船机船舶1.6 m吃水控制标准导致载货量偏低的实际问题,开展超吃水船舶进出升船机船厢系统性的实船试验,论证船舶吃水标准提升的可行性。结果表明,船舶出厢为控制性工况,2.0 m吃水船舶正常出厢实测最大下沉量16.46 cm,富余水深大于30 cm;基于实船试验数据改进的下沉量预测公式,将船舶实际下沉量预测精度提高1倍以上;按目前2座升船机运行水位协调机制,上下游水位变化在10 cm以内,船舶最大吃水提升至2.0 m是可行的。建议在运行中按照1.8~2.0 m吃水逐步放宽控制标准。 相似文献
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At present,equivalent water depth truncated mooring system optimization design is regarded as the priority of hybrid model testing for deep sea platforms,and will replace the full depth system test in the future.Compared with the full depth system,the working depth and span are smaller in the truncated one,and the other characteristics maintain more consistency as well.In this paper,an inner turret moored floating production storage & offloading system(FPSO) which works at a water depth of 320m,was selected to be a research example while the truncated water depth was 80m.Furthermore,an improved non-dominated sorting genetic algorithm(INSGA-II) was selected to optimally calculate the equivalent water depth truncated system,considering the stress condition of the total mooring system in both the horizontal and vertical directions,as well as the static characteristic similarity of the representative single mooring line.The results of numerical calculations indicate that the mathematical model is feasible,and the optimization method is fast and effective. 相似文献
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Ship hydrodynamics in shallow water becomes especially complicated since the nonlinearities in both the incident waves and the wave–hull interactions will be affected by the water depth. For a ship-shaped Floating Production, Storage and Offloading unit (FPSO) operating in shallow water, the broadside often suffers from the wave run-up and green water incidents in non-collinear harsh ocean environments. By applying the methods of ordinary moments and L-moments and the empirical Weibull distribution on the data measured in a series of model experiments, the high order statistics and the exceedance probability distribution of the run-ups along the FPSO broadside are evaluated and the effects of the shallow water depth and the incident environments are analyzed in this paper. It is seen that both the incident waves and the wave run-ups are non-Gaussian in shallow water and that the wave run-up characteristics are significantly influenced by the water depth and the incident environments, while the contribution due to the vessel vertical motions is negligible for the FPSO used in this study. The exceedance probabilities of the wave run-ups show that the broadside will be more likely to suffer from serious wave run-up and green water incidents in shallower water, in a higher incident wave and a non-collinear environment, especially so at locations around the FPSO midship within a range of 3/8Lpp ∼ 5/8Lpp. The dependency of the shape and scale parameters of the wave run-up probability distributions on the locations and the environment is quantified by model tests. The present study leads to the conclusion that the wave run-up characteristics and the shallow water effects should be considered carefully in determining the wave loads and the freeboard of a large FPSO in non-collinear environment conditions. 相似文献
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