输油管道热力计算及程序设计

评价埋地热油管道的的热工状况,首要的问题是计算管道周围土壤的非稳态温度场。针对埋地热油管道的一般形式,以二维非稳定传热方程来描述输油管道的传热过程,建立了计算温度场的计算模型,在边界条件中充分考虑了地面温度的变化以及管径等参数对管路温降的影响。采用有限差分数值理论对温度场进行了计算,并由此求得了热油管道的有关热工参数。通过实例分析表明了计算方法和计算程序具有一定的实际参考价值。

Thermal Calculation of Oil Pipeline

The calculation of the unstable temperature of the soil around pipeline is the first step to evaluate the hot oil pipeline. This paper deals with the ordinary form of pipeline, using two-dimensional unstable heat transmission equations to describe the heat transfer process and build the temperature calculation mode. The effects of the parameters, such as ground surface temperature and pipe diameter etc,are concerned in boundary conditions. The finite difference approach is used to resolve the equations and the thermal parameters of hotoil pipeline can be got from it. The calculation of a practical examples indicates that the method and codes in this paper meet the needs of actual uses.