多元可燃气体爆炸压力峰值的数值模拟  

Numerical Simulation of Peak Pressure for Multiple Combustible Gase

作　　者：邓军[1] 马晓峰[1] 商铁林[1] 赵勇[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《煤矿安全》2014年第4期13-16,20,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51134019);教育部创新团队资助项目(IRT0856)

摘　　要：基于Fluent数值模拟软件,模拟了多元可燃气体在不同气氛(气体浓度、点火能量、初始压力)条件下CH4的爆炸压力峰值的变化规律。结果表明:加入CO气体后,浓度6%的CH4爆炸压力峰值增加22%,浓度12%的CH4压力峰值降低25%;加入C2H6,浓度6%的CH4爆炸压力峰值增加55%,浓度12%的CH4爆炸压力峰值降低64%;加入H2,浓度6%的CH4爆炸压力峰值增加22%,浓度12%的CH4爆炸压力峰值下降5%。当点火能量从1 J增加到10 J时,浓度9%的CH4爆炸压力峰值增加31%;当压力从101 325 Pa增加到1.5×101 325 Pa,浓度9.5%的CH4压力峰值增加24%。This paper simulates variation laws of CH4 explosion peak pressure in different atmospheres （gas concentration, the ignition energy and initial pressure） based on the fluent software. The results show that the maximum explosion peak pressure enhances 22% in 6% methane concentration and drops 25% in 12% methane concentration with the adding of CO; it increases 55% in 6% methane concentration and reduces 64% in 12% methane concentration with the mixing of Call6 ; it increases 22% in 6% methane concentra- tion and drops 5% in 12% methane concentration with the joining of H2 , it enhances 31% in 9% methane concentration when the ig- nition energy adds from 1 J to 10 J, and it improves 24% in 9.5% methane concentration when the environment pressure rises from 101 325 to 1.5 × 101 325 Pa.

关 键 词：压力峰值 数值模拟 多元可燃气体 瓦斯爆炸 点火能量 爆炸特性 

分 类 号：TD712.7[矿业工程—矿井通风与安全]