饱和水土壤冻结过程中与热管耦合传热的数值分析  

NUMERICAL INVESTIGATIONS ON THE COUPLED HEAT TRANSFER OF THE WATER SATURATED SOIL WITH THE HEAT PIPE FOR THE SOIL FREEZING

作　　者：潘阳[1,2,3] 吴存真[1,2,3] 杨 

机构地区：[1]华东交通大学土木工程系 [2]浙江大学能源工程系 [3]上海机械学院动力系

出　　处：《江西科学》1998年第3期153-161,共9页Jiangxi Science

摘　　要：根据热管解决土壤冻胀问题，提出并建立了在冻结过程中饱和水土壤与热管耦合传热的数理模型，结合初始条件和边界条件，采用有限差分法以及Ｓｉｍｐｌｅ算法，对模型进行数值求解。数值计算的土壤温度场变化规律与实测的试验值相比较，基本吻合且一致性较好。根据模型的计算结果，对热管解决土壤冻胀的作用机理进行了分析。In this paper,numerical investigations have been carried out to described the coupled heat transfer of water saturated soil with a heat pipe for problems on the freezing expension of the soil solved by the heat pipe.In combination with the initial conditions and boundary conditions, and by use of the finite difference method and the SIMPLE programs,numerical results are gotten for the model.The predictions of the present study are well agreed with the data measured for the temperature distribution of the soil. According to the numerical results of the model,some mechanisms of the freezing expension solved by the heat pipe are analyzed.

关 键 词：饱和水土壤 热管 冻结 耦合传热 数值分析 

分 类 号：S152.9[农业科学—土壤学]