甲烷爆炸初期火焰传播规律尺度效应研究  

Study on scale effect of flame propagation law in initial stage of methane explosion

作　　者：郭子东[1] 郑丹 明华[3] GUO Zi-dong;ZHENG Dan;MING Hua(The Chinese People's Armed Police Forces Academy,He.bei Langfang 065000,China;Anyang Fire Detachment,Henan Anyang 455000,China;Research Institute of Petroleum Explo.ration and Development,Beijing 100083,China)

机构地区：[1]中国人民武装警察部队学院,河北廊坊065000 [2]安阳市消防支队,河南安阳455000 [3]中国石油勘探开发研究院,北京100083

出　　处：《消防科学与技术》2018年第3期302-305,共4页Fire Science and Technology

基　　金：中国石油勘探开发研究院科学研究与技术开发项目"空气泡沫压裂理论技术研究"(专其他Y41601院)

摘　　要：为了研究大型实际煤矿瓦斯爆炸火焰传播规律,在长1.5 m、内径0.1 m的小尺寸管道实验基础上,同比例放大管道尺寸至3、5、10、15、20倍,利用FLUENT软件模拟研究甲烷爆炸初期火焰传播特征,得出5个尺度下的火焰传播速度、爆炸压力和爆炸温度的变化规律,并得到拟合曲线。结果表明,管道尺寸对爆炸压力和爆炸温度影响较小;火焰传播速度、爆炸压力和温度是相互影响的。研究可为下一步大尺寸实验提供技术支撑。In order to study the law of large-scale coal mine gas ex-plosion flame propagation,the flame propagation characteristics were studied in the initial stage of methane explosion by FLUENT.The simulation was based on a small-sized pipe test data with the length of 1.5 m and inner diameter of 0.1 m,and the pipe size was enlarged to 3,5,10,15 and 20 times.Under the conditions of 5 scales,the rules of flame spreading velocity,explosion pressure and explosion temperature were gotten,and the fitting curves were gotten.Results showed that,the influence of pipe size on the ex-plosion pressure and temperature was small;the flame spreading velocity,explosion pressure and temperature interact with each other.The research can provide technical support for the next large-scale experiment.

关 键 词：甲烷爆炸 长径比 数值模拟 大尺度实验 火焰传播 

分 类 号：X932[环境科学与工程—安全科学] TD712.7[矿业工程—矿井通风与安全]