有毒重气体连续泄露扩散模拟与风险评估

摘要

基于计算流体力学(CFD)的重气扩散模型,以氯气为例,研究在风速和障碍物大小不同的情况下,氯气连续泄漏后扩散过程的运动特征与浓度分布信息,利用Unity3D软件进行扩散过程模拟.以毒性负荷浓度分布及变化特征为依据,可对扩散区域进行伤害等级划分,为泄漏事故发生时人员疏散和逃生路线提供优选方案支持.%Based on the computational fluid dynamics (CFD) of the weighty gas dispersion model and taking chlorine as release gas,this paper researches the characteristics of the movement and concentration distribution information for chlorine gas after continuous release in the case of different wind speed and different size of obstacles.Unity 3D software is applied to simulate diffusion process.The dividing damage levels for diffusion area are divided according to concentration distribution and variation characteristics,which is as the optimized scheme and technical support of evacuation and escape routes when the leaking accident happened.