Study On Numerical Simulation And Early Warning Technology For Natural Gas Pipeline Leakage

In the process of gathering and losing of natural gas,the leakage of natural gas can be caused.Gas leakage,therefore,not only will cause seriously threatens the safety of people’s life and property.Therefore,it is of great significance to carry out the basic research of pipeline leakage warning and to carry out safe operation and guarantee the safety of life property.Based on early warning technology,this paper conducts a method study and rule analysis on the diffusion and early warning of the leakage of natural gas pipelines.First of all,both at home and abroad are analyzed in gas leakage,diffusion and early warning technology research status,the gas pipeline leakage,turbulent jet theory is analyzed,the basic control equation of gas flow is deduced;Secondly,established the mathematical model of gas leak in the atmosphere after diffusion finite element method is applied to the model of the discrete solution of partial differential equations;Then,the physical model of leakage diffusion of natural gas pipeline was established by using the GAMBIT module in FLUENT simulation software FLUENT,and the two-dimensional grid was drawn,and the corresponding boundary conditions were determined.Then,FLUENT was used to simulate the leakage diffusion of different time,different pipeline pressure and different leakage modes,and analyze the influence of different factors on the gas leakage diffusion.Through the TDLAS experiment system for gas leak detection experiment,the experimental results the correctness of the numerical simulation proves the FLUENT;Finally,some suggestions on improving and improving the early warning foundation are put forward based on the results of numerical simulation.The results of numerical simulation of gas pipeline leakage in this paper and the method of setting up early warning devices have certain guiding significance and reference value for the safe operation and maintenance of natural gas pipelines.