化学危险性气体泄漏扩散模拟及其影响因素

分析了描述易燃易爆及有毒有害气体泄漏扩散过程的数学模型，包括Gaussian模型、Gaussian轨迹烟云模型、BM模型、Sutton模型及FEM3模型。重点介绍了目前广泛使用的Gaussian模型及Gaussian轨迹烟云模型。针对事故泄漏扩散过程的复杂性，详细讨论了气象条件及地形条件对危险性物质泄漏扩散过程的影响，此外还对不确定参数的选取进行了探讨。

RESEARCH ON DISCHARGING DISPERSION OF CHEMICAL DANGEROUS GASES AND ITS INFLUENCE FACTORS

The characters of some numerical models which describe discharging dis persion process of flammable or toxic gases have been analyzed. The models inclu de Gaussian plume/puff model, Gaussian plume trajectory model, BM model, Sutton model and FEM3 model. Gaussian plume/puff and Gaussian plume trajectory models u sed abroad have been introduced emphatically. Aiming at the complication of the di spersion process,such as weather conditions and landform situation which influen ce the d iffusion process of flammable or toxic gases have been analyzed in detail, and s ome countermeasures have been put forward to ascertain some uncertain parameters .