瓦斯爆炸冲击波在管道拐弯情况下的传播特性  

Propagation characteristic about shock wave of gas explosion at laneway corner

作　　者：贾智伟[1] 刘彦伟[1] 景国勋[1] 

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《煤炭学报》2011年第1期97-100,共4页Journal of China Coal Society

基　　金：河南理工大学博士基金资助项目(B2009-20)

摘　　要：针对一般空气区从实验和数值模拟两方面对瓦斯爆炸冲击波在管道拐弯情况下的传播特性进行了研究。通过实验研究发现了一般空气区瓦斯爆炸冲击波超压衰减系数在管道不同拐弯角度情况下与冲击波初始超压以及管道拐弯角度有关系,并确立了相互之间的关系式。通过数值实验计算分析了一般空气区瓦斯爆炸冲击波在管道拐弯情况下的超压变化规律,得出了瓦斯爆炸冲击波在管道拐弯情况下的压力分布情况。将模拟结果和试验结果进行对比分析,验证了数值模拟结果的可靠性。The spread law of gas explosive shock wave via pipeline corner was studied from two angles of experiment and numerical simulation.In general air districts,propagation rule formula of gas explosion shock wave via the pipeline corner was obtained.The relation between propagation rule of shock wave and initial pressure and pipeline corners was discovered under circs of shock wave passing though pipeline corners.The pressure isopleths pictures and reflection district of shock wave via the pipeline corners and cross-section were obtained by numerical experiment.Applicability and reasonability of results of numerical experiment were verified by contrast with experiential formulas.

关 键 词：瓦斯爆炸 冲击波 管道拐弯 传播特性 

分 类 号：TD712.7[矿业工程—矿井通风与安全]