甲烷爆炸实验教学的数值模拟设计与实践  

Numerical simulation design and practice of methane explosion experimental teaching

作　　者：雷柏伟[1] 郭泽凯 吴兵[1] LEI Baiwei;GUO Zekai;WU Bing(School of Emergency Management and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)应急管理与安全工程学院,北京100083

出　　处：《实验技术与管理》2023年第10期211-216,共6页Experimental Technology and Management

基　　金：中央基本科研业务费项目(2022YQAQ09);中国矿业大学(北京)本科教育教学改革与研究项目资助(J22ZX02、J231202)。

摘　　要：该文基于CFD代码GASFLOW-MPI建立了20 L球型爆炸罐的数值模型,以一步甲烷燃烧反应化学模型为基础,考虑换热对爆炸的影响,研究了6%~15%不同浓度下甲烷爆炸的压力特性曲线及温度场变化,定量分析了热损失对甲烷爆炸特征参数的影响。将数值模拟结果与实验结果进行的对比验证表明,基于CFD代码GASFLOW-MPI的数值模拟结果能够准确复现甲烷爆炸实验过程,证明了甲烷爆炸过程中热量传递对爆炸过程产生的重要影响。This study is based on the CFD code GASFLOW-MPI to establish a numerical model of a 20 L spherical explosion chamber.Using a one-step methane combustion reaction chemical model as the basis and considering the influence of heat transfer on the explosion,the pressure characteristics curve and temperature field variations of methane explosions at different concentrations(6%to 15%)were investigated.The study quantitatively analyzed the effects of heat loss on the characteristic parameters of methane explosions.The comparison between the numerical simulation results and experimental results shows that the numerical simulation results based on the CFD code GASFLOW-MPI can accurately reproduce the experimental process of methane explosion,demonstrating the important impact of heat transfer on the explosion process during methane explosion.

关 键 词：甲烷爆炸 数值模拟 实验教学 爆炸演化机理 热损失 

分 类 号：X932[环境科学与工程—安全科学]