冻结壁温度场模型试验及其导热系数反分析

Modeling test of temperature field of freezing wall and inverse heat conduction problem

冻土导热系数是计算冻结壁温度场的重要参数,本文根据冻结壁温度场物理模型试验的结果,建立非线性多维导热系数反分析的数学模型,采用选择法和有限元法,反分析冻结壁整体导热系数,为冻结壁温度场数值分析和冻结壁厚度的设计计算提供参考。

The thermal conductivity of frozen soil is an important parameter in calculating temperature field of freezing wall. Based on the results of physical modeling test, a mathematics model of m-dimension inverse heat conduction problem is set up in this paper, and selecting method and FEM are applied to the solution of this problem according to the least square principle, providing the reference for analyzing the temperature field and predicting the formulation of freezing wall.