The risk analysis of railway dangerous goods transportation is an important part of railway transportation safety management. At present, the risk analysis methods for railway dangerous goods transportation are mainly qualitative and quantitative methods. Based on the theory of computational fluid dynamics, this paper applies FLUENT to analyze the diffusion law of LNG gas tanker after leakage. A three-dimensional numerical simulation on the consequences of jet fire accident caused by leakage has been studied in detail. The analysis results are compared with the simulation results of DOW F&E index method. Its accuracy of simulation is examined.
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