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重气泄漏扩散事故是经常发生且危害较大的一种事故形式 ,由于重气的密度大于空气 ,因此重气往往沿地面扩散 ,泄放物质进入人体将引起中毒事故 ,若泄放物质被点燃或引爆将引起大规模的燃烧爆炸事故。本文给出了描述重气扩散过程的数值模拟模型及计算方法 ,并采用本文提出的模型和算法 ,对ThorneyIslandTrial008实验进行了数值模拟 ,模拟结果与实验结果符合较好 ,说明本文提出的模型和算法是适用的。
Heavy gas leak Dispersion accident is a frequent and harmful form of an accident. Because the density of heavy gas is greater than that of air, the heavy gas often spreads along the ground. The release of substances into the human body will cause poisoning. If the discharged substance is ignited Or detonation will cause a large-scale fire and explosion accident. In this paper, the numerical simulation model and calculation method of heavy gas diffusion process are given. The model and algorithm proposed in this paper are used to numerically simulate the ThorneyIslandTrial008 experiment. The simulation results are in good agreement with the experimental results, which shows that the proposed model and algorithm Is suitable.