Numerical Simulation Of Erosion Of Natural Gas Pipeline By Liquid Particles

With the maturity of natural gas transportation technology,there are fewer and fewer impurities in natural gas,especially solid particles,but in most cases,natural gas production is always accompanied by liquid hydrocarbons,free water and condensate.The liquid particles flow with the natural gas at high pressure and high speed,and these droplets will cause erosion and wear on the pipe wall surface,making the pipe wall thinner and more susceptible to corrosion and thus the gas pipeline.In order to ensure the safe operation of the gas pipeline,the ANASYS-FLUENT numerical simulation software is used to simulate the numerical simulation results of the erosion of two typical pipelines of the gas pipeline-venturi and 90°elbow,and the two gas transmissions are obtained.The maximum erosion wear position,maximum erosion wear rate and total erosion wear of the pipeline are of great significance to the stable and safe flow of the gas pipeline.Firstly,the equations used in this simulation are described.The physical model of the pipeline is selected according to the actual situation on the site.The physical model is divided by icem software.Finally,the original software is used to draw the maximum erosion wear rate and total erosion wear of the pipeline.Graph.In the numerical simulation process of gas pipelines,we should control a single variable for comparative study.The variables that study the influencing factors of erosion wear include: natural gas gathering speed,liquid particle size,mass flow rate of liquid particles and tube type change,and analysis of the erosion wear law of liquid particles on venturi and 90°elbow.The results show that with the increase of the gathering speed and themass flow of the particles,the erosion wear of the venturi and the 90°elbow is greater.The increase of the liquid particle size increases the erosion effect of the venturi.Small,for the 90° elbow to increase after the change;the venturi tube shrinkage section length increases,the venturi tube erosion wear effect is increased,but the shrinkage tube length exceeds 13 mm when the venturi tube erosion wear effect increases sharply Large;90°elbow pipe diameter increases,and the effect of erosion wear of 90°elbow decreases;the bend ratio of 90°elbow increases,and the effect of erosion wear of90° elbow decreases first.Increase.