Numerical Simulation on Quasi-periodic Soil Temperature Field of Parallel Buried Pipelines

In the area of parallel buried pipelines,a temperature field of hot crude oil pipelines is influenced by the cool processed oil pipelines,therefore the temperature field of parallel pipelines is different from that of single pipeline.For hot crude oil pipeline,the soil temperature of hot crude oil pipeline is the base of shut down,start-up,and operation.It is necessary to acquaint the soil temperature in order to make sure the pipeline operate safely and avoid the pipeline condenser.Based on the soil properties measurement,the finite volume method is adopted to research the quasi-periodic soil temperature field around parallel buried pipelines by using quasi-periodic soil temperature field of parallel buried pipelines at Sipu inlet station of west pipeline as the example.The simulating data conform with the measured data,it is indicated that the mathematical model is correct and the results provide the reference for the engineering.