障碍物导致甲烷-氧气爆炸的三维数值模拟  

Three dimensional numerical simulation of explosion induced by obstacles in CH_4-O_2 mixture

作　　者：范宝春[1] 姜孝海[1] 谢波[1] 

机构地区：[1]南京理工大学动力工程学院,江苏南京210094

出　　处：《煤炭学报》2002年第4期371-373,共3页Journal of China Coal Society

基　　金：国家自然科学基金资助项目 (1983 2 0 3 0 )

摘　　要：许多因燃烧导致的爆炸事故都与空间局部受限有关 ,例如管壁和管内障碍物可使火焰自行加速 ,并导致爆炸 .基于湍流模型和EBU -Arrhenius燃烧模型 ,利用SIMPLE格式对甲烷 -空气混合物在管内燃烧时 ,因障碍物的作用而发生的爆炸现象进行了三维空间的数值模拟 .Explosion hazards induced by the combustion in partly confined space. For example, the self accelerating flame and gas explosion will be induced in a tube by obstacles and the tube wall. Based on the K-ε turbulent model and improved EBU-Arrhenius turbulent combustion model, the three dimensional numerical simulations were performed for the explosion in the CH 4-O 2 mixture in a tube with obstacles by using SIMPLE schemes. The mechanics of the flame acceleration and its induced shock waves have been described from calculated results.

关 键 词：障碍物 甲烷-氧气爆炸 三维数值模拟 湍流燃烧 瓦斯爆炸 

分 类 号：TD712.71[矿业工程—矿井通风与安全]