Simulation of temperature field of hot oil pipelines
During hot oil pipeline transportation,conditions such as pipeline shutdown and environmental temperature reduction often occur,reducing pipeline oil temperature.When the oil temperature is lower than a critical value,oil's physical properties change from Newtonian fluid to non-Newtonian fluid with a sudden decrease in oil's fluidity,even causing pipeline gelation accidents.When the accident is serious,the whole hot oil pipeline cannot be used.Normal operation of oil transportation system can be affected,and safety accidents including fire and explosion may also happen,posing a threat to the environment and personnel safety.Numerical simulation of hydrothermal force in hot oil pipeline is an important measure to identify crude oil pipeline's operation law and safe operation boundary,as well as to carry out reliability evaluation.The construction of a calculation model of the pipeline radial temperature field is key to numerical simulation.In this paper,the fine numerical simulation model of the radial temperature field during the operation and shutdown of the hot oil pipeline was constructed for a unified solution of the internal and external radial temperature field of the hot oil pipeline.The error range of the simulation model was less than±0.5 ℃ when compared with the on-site shutdown data of a domestic hot oil pipeline.Besides,simulation model accuracy was verified by comparing it with the commercial software FLUENT.
hot oil pipelinesafe productionshutdown temperature dropnumerical simulation
万方数据
维普
