Numerical Calculation Of The Temperature Field Of Double Laying In One Ditch With Petroleum Transmission Pipeline

As China’s oil and gas in dustry’s rapid development, especially the formation ofnorthwest energy base, oil and gas pipeline construction in the rush hour. Our country is amountainous country, pipeline routing usually in a narrow corridor belt, form many pipelinesparallel or with the condition of the laying in one ditch. Pipeline’s laying in one ditch with notonly reduces area of expropriation task, reduces Rolling and destruction of the vegetation, butalso is beneficial to the operation, maintenance and management by the project after put intooperation. China’s oil and gas pipeline is divided into three parts, they are heatingtransportation, normal temperature transportation and low temperature transportation. Forlaying in one ditch with pipeline,if the less distance, the more heatwaste by the hotpipeline,and causing the thermodynamic calculation between on way cooling and singlepipeline not conform to, and more seriously to produce accident that make pipelinecurdle.Therefore, the thermodynamic calculation of the laying in one ditch with the crude oilpipeline and product oil pipeline have meaning to the safe and stable operation of pipeline.This essay is to research laying in one ditch with petroleum transmission pipeline.Widely collects the relevant theory and documents of oil pipeline laying in one ditch withrelated at home and foreign, and in-depth research the situation of application and primalproblem of pipeline laying in one ditch locale with the application and existing mainproblems; To research the computing method of the temperature field of petroleumtransmission pipeline, go into heat transfer theory, fluid mechanics and correlation theory;Systematic completely the oil relevant parameter of simulation calculate and the relatedparameters of pipeline and soil; On the basis of study the locale of laying in one ditch withpetroleum transmission pipeline,to set up geometrical model and mathematical model andmade sure the boundary conditions and initial conditions:Use the ANSYS software to steadynumerical simulation the temperature field of double laying in one ditch with petroleumtransmission pipeline,and to calculate the different crude oil temperature,the different pipelineburied deep and the different space effect on temperature field of double laying in one ditchwith petroleum transmission pipeline;To transient simulate the temperature field of doublelaying in one ditch with petroleum transmission pipeline,calculate the safe time of thepipeline stop to transmit.Some practical project can base on its calculate result.