细水雾作用下CH_4/空气总包机理对比与改进  

Comparison and improvement of CH_4/Air global combustion mechanisms under water mist

作　　者：刘长春[1] 马砺[1] 王伟峰[1] 邓军[1] 王刘兵[1] 白磊[1] 

机构地区：[1]西安科技大学安全科学与工程学院,陕西西安710054

出　　处：《消防科学与技术》2017年第2期196-200,共5页Fire Science and Technology

基　　金：中国博士后科学基金面上项目(2016M590962);国家自然科学基金青年科学基金项目(51604215)

摘　　要：针对细水雾作用下CH_4/空气燃烧反应机理,将细水雾作为拟气体物质引入机理中。采用对冲火焰模型,对比和评价了细水雾作用下的不同总包机理,并提出改进方法。改进后的总包机理模型JL2X能够更好地预测出发生熄火时细水雾质量分数区间、H_2O体积分数分布和CO体积分数分布。The water mist was considered as a quasi gaseous sub- stance then was introduced into CH4/air combustion reaction mechanisms. The counterflow flame model was used to evaluate the different CH4/Air global combustion mechanisms under the influence of water mist, and the improvement methods were proposed. The modified CH4/Air global combustion mecha- nisms JL2X can predict water mist mass fraction range of flame out, H20 volume fraction distribution and CO volume fraction distribution more accurately.

关 键 词：细水雾 总包机理 对冲火模型 燃烧 甲烷 

分 类 号：X924.4[环境科学与工程—安全科学] TU892[建筑科学]