基于模糊理论的船舶进水速度计算方法  

Study on the inflow velocity of ships based on fuzzy theory

作　　者：边金宁 张海鹏[1] 陈淼[1] 韩涛 BIAN Jinning;ZHANG Haipeng;CHEN Miao;HAN Tao(College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2021年第10期1410-1417,共8页Journal of Harbin Engineering University

基　　金：装备预研船舶重工联合基金资助项目(6141B042851).

摘　　要：为了研究船舶进水后破口信息与进水速度之间的关系,综合多种因素评估进水速度,采用计算流体动力学技术模拟进水过程、VOF技术实现进水可视化、获取进水速度,分析进水速度随时间的变化趋势,分析破口面积、高度、形状、纵向位置对进水速度大小的影响,为了评估进水速度的模型,量化破口形状、位置对进水速度的影响程度,使用了不同模糊算子计算进水速度,采用了模糊理论构造模型评估体系。结果显示:对破损进水情况来说:进水速度呈现增大、减小、小幅增大再基本稳定的趋势,进水速度随破口面积线性增大,破口高度、纵向位置对进水速度基本无影响,破口的垂向长度占比越大对应的进水速度越大。在考虑不同破口位置和形状后,基于模糊理论可实现对综合进水速度的评估,考虑主要因素后的综合进水速度为2.08 m/s,考虑所有影响因素的评估速度为1.88 m/s。In order to study the relationship between the information of the inlet and the inlet velocity,the inlet velocity was evaluated based on a variety of factors.The computational fluid dynamics simulation process,the water VOF technique to realize visualization,access to the water inlet velocity and analysis into the water velocity changes with time,the analysis break area,height,shape,the influence of longitudinal position of inlet velocity,inlet velocity model for the evaluation of structure based on fuzzy theory,quantitative breach the influence degree of the shape,location of feed speed,choose different fuzzy operator feed speed calculation.The results show that:for the damaged inlet water of this model,the inlet water velocity shows a trend of increasing,decreasing,slightly increasing and basically stabilizing.The inlet water velocity increases linearly with the area of the breach,while the height and longitudinal position of the breach have no effect on the inlet water velocity.The larger the proportion of the vertical length of the breach,the larger the inlet water velocity.After considering the different fracture positions and shapes,the comprehensive inlet velocity can be evaluated based on the fuzzy theory.The comprehensive inlet velocity after considering the main factors is 2.08 m/s,and the comprehensive inlet velocity after considering all the influencing factors is 1.88 m/s.

关 键 词：破口信息 进水速度 计算流体动力学 模糊评价法 模糊算子 风险评估 破舱稳性 数值模拟 

分 类 号：U661.2[交通运输工程—船舶及航道工程]