同沟敷设原油和成品油管道三维温度场的数值模拟

摘要

For hot crude oil pipeline, shut down, start-up and operation are based on the soil temperature around the crude pipeline. Only the distribution of the soil temperature was obtained accurately can make sure the pipeline operate safely and avoid condensing the pipeline. In pipelines laid in one ditch, hot crude oil pipeline temperature field was influenced by the cool products pipeline, so the temperature field of pipelines laid in one ditch was different from the single pipeline. On the crude oil pipeline and the products pipeline in China,the three-dimensional temperature field of pipelines laid in one ditch was carried out with the unstructured mesh and standard k-ε model. Comparing the temperature field of pipelines laid in one ditch with the one of single pipeline, the effect of products pipeline on temperature field of crude pipeline was analyzed.%热油管道周围温度场是管道停输再启动及管道安全运行的基础,只有准确掌握管道周围的温度场分布,才能使管道安全运行,避免凝管事故的发生.在同沟敷设管道中,常温输送的成品油管道必将影响热原油管道的温度场,因此同沟敷设管道的温度场与单根输油管道的温度场不同.为了准确掌握同沟敷设原油和成品油管道的温度场,以国内某同沟敷设管段为研究对象,采用Gambit软件的非结构化网格技术和Fluent软件的标准-模型对同沟敷设管道的三维温度场进行数值模拟.通过与相同条件下单根原油管道的温度场比较,分析成品油管道对同沟敷设原油管道的影响.