Simulation and analysis of leakage and diffusion characteristics of gas phase ethane pipeline
In order to study the impact of gas-phase ethane pipeline leakage after diffusion,an ethane transmission pipeline proposed by a company was used as the engineering background.CFD(computational fluid dynamics)software was used to simulate and analyze the leakage of gas-phase ethane pipeline with different leakage orifice sizes and different wind speeds,and to explore the leakage dispersion characteristics and the evolution of the hazard range.The results show that the shape of ethane diffusion changes with the increase of leak aperture diameter,the shape evolution of small-aperture leak diffusion in soil is divided into pre-,mid-and late-stage,while the diffusion of full-size pipe leak in the atmosphere is divided into vertical jet diffusion in the absence of wind and lateral diffusion in the presence of wind.With the increase of leak aperture diameter,the diffusion range of ethane leak becomes larger and the danger area becomes larger.With the increase of wind speed,the diffusion height of full-size ethane leak decreases and the danger area becomes larger.With the increase of wind speed,the diffusion height of the full-size ethane leak decreases,and the time to reach the peak of the farthest diffusion distance of the dangerous concentration is shortened.
万方数据
维普
