摘要
运用Fluent对瓦斯煤尘混合物爆炸过程进行了数值模拟,并对爆炸过程中爆炸超压和火焰温度,进行了分析.结果表明:在爆炸初始3ms内的火焰温度上升速率达到了3 000K/ms,火焰最高温度达到了3 400K.瓦斯煤尘混合物爆炸的最大爆炸超压随着煤尘粒径的增大而减小;当瓦斯浓度为5%,煤尘浓度为390g/m3时,瓦斯煤尘混合物爆炸的最大爆炸超压值最高.该模拟仿真系统的仿真结果为预防煤矿瓦斯、瓦斯煤尘爆炸提供数据基础和参考.
The Fluent software was used to make numerical simulations to the explosion process of the mixture of gas and coal dust and analyze the explosion overpressure and flame temperature during the explosion process. It turns out that in the initial explosion flame temperature rise rate reaches 3 000 K/ms within the 3 ms and the highest temperature of flame reaches 3 400 K.The maximum explo-sion overpressure of gas-coal dust compound decreases as the particle size of coal dust increase.When the gas concentration is 5% and the coal dust concentration is 390 g/m^3 ,the gas-coal dust compound ex-plosion overpressure value is the highest.The simulation results of the simulation system provide basis data and references for the prevention of mine gas and gas-coal dust explosion.
出处
《中北大学学报（自然科学版）》
CAS
北大核心
2015年第2期208-213,218,共7页
Journal of North University of China(Natural Science Edition)
基金
山西省高等学校科技创新项目
关键词
瓦斯煤尘
粒径
最大爆炸超压
数值仿真
gas and coal dust
particle size
maximum explosion pressure
numerical simulation
作者简介
魏嘉（1988-），男，硕士生，主要从事安全监控与事故模拟技术研究．
