绿化带对氯气泄漏扩散影响的模拟研究

Simulation Research on the Influence of Greenbelt on Chlorine Leakage and Dispersion

基于FLUENT软件的物质传输模块建立了氯气泄漏扩散模型。考虑绿化带对氯气泄漏扩散的影响,针对不同的绿化带高度、泄漏速度和风速对氯气泄漏扩散进行了数值模拟。结果表明,绿化带对氯气的泄漏扩散有阻碍作用;绿化带高度越高越容易减缓危险区域在水平方向的传输;泄漏速度增加,危险区域的浓度值增高;风速增加,危险区域的浓度值减小,而绿化带能够有效地减缓泄漏速度和风速对下风向浓度的影响。模拟分析结果对预防和处理氯气泄漏扩散事故具有一定的意义。

A model for chlorine leakage and diffusion is established based on the species transport of FLUENT.Taking the greenbelt influence into account, the simulations are conducted according to different heights of greenbelt,leakage and wind velocities.The results show that chlorine can be hindered by the greenbelt;the greenbelt with larger height can slowdown the transportation of hazard region in horizontal direction;concentration of hazard region gets higher with the increase of the leakage velocity and gets lower with the increase of the wind velocity,the greenbelt can effectively reduce influence of leakage velocity and wind velocity to leeward concentration.The simulation results will be helpful for preventing and dealing with chlorine leakage and diffusion accidents.