对埋地热油管道投产预热过程进行了数值模拟计算。
The process of buried hot-oil pipeline during start-up is simulated by the way of numerically simulating technology.
建立了埋地热油管道热力影响区的数学模型，并用有限元法进行了求解。
A mathematical model for determining the thermal influence zone of buried hot oil pipeline was developed and solved numerically by the finite element method.
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。
The calculation of the unstable temperature of the soil around pipeline is the first step to evaluate the hot oil pipeline.
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