低温贮罐支座的热解析

Thermal Analysis of Cryogenic Tank Saddle

利用数值解法中较新型的边界元法来计算低温贮罐支座传热问题，它的主要基本原理是通过加权残余法或构造Ｇｒｅｅｎ函数，有助于两点函数表示的基本解及利用分部积分法，将区域上的偏微分方程转换成区域的边界上的积分方程，通过对区域边界离散化对该积分方程进行数值求解．本文对计算误差进行估计，并以计算新型ＬＰＧ船型上的贮罐支座温度场分布为例，对计算结果进行了分析和讨论．

The numerical solution of boundary element method was analysed. The basic principle is the founding of the integral equation on the boundary of domain by using the weighted residual method or structuring by parts. The integral equation on the boundary of domain is derived to by the partial differential equation on the domain. Moreover, the numerical solution of the integral equation is obtained through the discretization for the boundary of domain. On the paper, error estimation is also callculated and the boundary element method is aplied to callculate the distribution of temperature in the saddle of the tank of the LPG carrier. Finally the results are analysed and discussed.