摘要
基于导热、对流及辐射等传热理论,建立了大型液化天然气(LNG)储罐承台、外罐墙体及穹顶的传热物理模型。以16万m3大型LNG储罐为例,建立了轴对称有限元热分析模型,给定了有限元分析的热输入边界及控制求解方法。计算结果表明,基于基本传热理论的简化计算方法是可行的,可应用二维的轴对称简化模型以及三角形或者四边形的网格划分方法进行传热计算。与传统的计算方法相比,此温度场的结果更准确可靠,可以用在工程设计中。
Based on the theory of heat conduction,convection and radiation,aphysical model of heat transfer large-scale liquefied natural gas（LNG）storage tank slab,outer tank wall,and roof was established.The domestic typical 16×104 m3 large-scale LNG storage tank was taken as an example to establish the axisymmetric finite element thermal analysis model,and give the heat input boundary and control method for solving thermal finite element analysis.The results show that,the simplified calculation is feasible,which can be applied to two-dimensional axisymmetric simplified model and mesh division method of triangular orquadrilateral heat transfer calculation.Compared with the traditional calculation method,the temperature field obtained by this method is more accurate and reliable results,and could be used in engineering design.
出处
《石油化工设备》
CAS
2015年第4期44-48,共5页
Petro-Chemical Equipment
基金
中国海洋石油总公司科技专项(KJ 125ZDXM 14QD 04)
关键词
储罐
液化天然气
大型
传热
温度场
有限元分析
tank
liquefied natural gas（LNG）
large-scale
heat transmission
temperature field
finite element analysis
