火灾对埋地输油管道温度场影响的数值研究

地面发生火灾时,将对土壤、地下管道及输送的油品温度产生影响,原有的热平衡被破坏,建立新的温度场;即便在火灾被扑灭后,一段时间内土壤、管道温度会继续升高,仍有可能造成管道失效。针对此情况建立了非稳态传热模型,进行了数值模拟,并对结果进行了分析。这一模型的建立,为后续的管内输送介质温度分布的研究提供了科学的依据。

Simulation Study on Fire to the Buried Pipeline's Temperature Field

When a ground surface is on fire,soil,buried pipeline and soil's temperature will be influenled,the thermal balance is destroyed,and new temperature field is established.Even when the fire had been put out,the temperature of the soil and pipeline would continue to increase.To solve the problem,an unstable heat transfer model is developed,numerical simulation is made and the result is analyzed.The establishment of this model has laid the scientific basis for later research on the effect of a ground surface fire on the medium transportation in buried pipelines.