土壤烘干区对并行埋地管道周围温度场的影响研究

摘要

In parallel buried pipelines, hot crude-oil pipeline causes the rearrangement of the soil moisture and moisture movement around the pipeline which brings about the soil drying zone around the hot pipeline.In order to study the influence of soil drying zone on the parallel buried pipeline temperature field,three dimensional temperature field model of parallel buried pipelines was simulated using structured and unstructured grid technology of Gambit software and Fluent software standard model.The variation of dissipation function, atmospheric temperature and soil temperature layer of constant temperature along the pipeline are considered in the simulation calculation.The results show that the calculated results are in agreement with the measured results in the case of considering the soil drying zone.%在并行埋地管道中,加热的原油管道引起其周围土壤湿度的重新分布,管道周围水分运移,在热管道周围形成土壤烘干区.为了研究土壤烘干区对并行埋地管道温度场的影响,采用Gambit软件的结构化与非结构化网格技术和Fluent软件的标准-模型对并行埋地管道的三维温度场进行模拟计算.模拟计算中考虑了耗散函数、大气温度和土壤恒温层温度沿管线的变化.结果表明:在考虑土壤烘干区的情况下,模拟计算结果与现场实测结果基本吻合.