独立B型液化天然气运输船绝热层#br#
局部失效对结构安全的影响

摘要/Abstract

摘要：

摘要：根据独立B(SPB)型液化天然气(LNG)运输船绝热层失效后船体的传热特点，提出通过温度影响因子和面积影响因子分析船体结构温度场和内层对流空间空气温度场的耦合关系.选取液舱绝热层典型的局部失效模式，采用计算流体动力学(CFD)数值模拟和有限元分析求解失效前后船体温度场和温度应力，分析了绝热层局部失效对船体结构安全性的影响.对事故工况下SPB型LNG船的安全性评估具有一定的参考意义.

关键词: , 独立B型液化天然气运输船, 绝热层, 内层对流空间, 温度场耦合, 温度影响因子

Abstract:

Abstract： According to the selfsupporting prismatic type B (SPB) liquefied natural gas (LNG) carriers’ heat transfer characteristics after the failure of thermal insulation layer, the coefficients of area and temperature are proposed to describe the coupling between structure temperature field and air temperature field of internal convection space. A typical partial failure model is chosen to calculate the structure temperature field and thermal stress by computational fluid dynamics (CFD) numerical simulation and finite element method, and the change of temperature and stree before and after the partial failure is analyzed to estimate the effect of the thermal insulation layer failure on the structure safety. The results provide a reference for the research on the structure safety of SPB LNG carrier.

Key words: selfsupporting prismatic type B (SPB) liquefied natural gas (LNG) carrier, thermal insulation layer, internal convection space, coupling of temperature fields, coefficient of temperature

中图分类号:

U 661.43

马晨增，唐文勇. 独立B型液化天然气运输船绝热层#br# 局部失效对结构安全的影响[J]. 上海交通大学学报（自然版）, 2017, 51(3): 300-.

MA Chenzeng,TANG Wenyong. Effect of Partial Failure of SelfSupporting Prismatic Type B#br# Liquefied Natural Gas Carriers’ Thermal Insulation Layer on#br# Structure Safety[J]. Journal of Shanghai Jiaotong University, 2017, 51(3): 300-.

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独立B型液化天然气运输船绝热层#br# 局部失效对结构安全的影响

Effect of Partial Failure of SelfSupporting Prismatic Type B#br# Liquefied Natural Gas Carriers’ Thermal Insulation Layer on#br# Structure Safety

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