方向与风速对氯气管道泄漏扩散影响研究

Effects of Direction and Wind Speed on Chlorine Pipeline Leak Diffusion

基于Fluent的物质传输平台建立了氯气管道泄漏扩散模型,针对不同泄漏方向和环境风速对氯气泄漏扩散进行数值模拟,从而对氯气扩散的以致死浓度为参考的安全区域进行了研究。结果表明,氯气在大气重力的作用下,氯气的致死毒性浓度更加接近地面,以及风速对扩散有着显著影响,存在环境风速时,氯气向下风方向扩散范围显著增加,且氯气的致死毒性浓度更加接近地面。

Based on Fluent mass transport platform, a chlorine pipeline leak diffusion model is established, in view of the different leakage direction and ambient wind speed, numerical simulation of chlorine gas leakage and diffusion is conducted and thus a research with the chlorine diffusion lethal concentration for reference security zone is carried out. The results show that chlorine lethal toxic concentration is more close to ground under the action of gravity in the atmosphere; wind speed has a significant impact on diffusion, with the presence of ambient wind speed, chlorine diffusion range increases significantly along the downwind direction, and chlorine lethal toxicity concentration is more close to ground.