高压物理学报2025，Vol.39Issue(5)：76-84,9.DOI:10.11858/gywlxb.20240944
双重异性障碍物下掺氢甲烷的燃爆压升效应
Pressure Rise Effect of Hydrogen-Methane Mixture Combustion under Dual Heterogeneous Obstacles
摘要
Abstract
The disaster characteristics of gas combustion and explosion are hot and key topics in domestic and international research.Studying the combustion and explosion characteristics under complex constraint conditions is of great significance.Regarding rigid and flexible obstacles,the combustion and explosion process of hydrogen-doped methane gas in a long straight pipeline with double heterogeneous obstacles was explored through experiments.The results show that,compared with the obstacle-free environment,the influence of double obstacles on the flame speed,explosion pressure,and explosion intensity index increases with the increase in the blockage ratio of the flexible obstacle and the addition of hydrogen.Moreover,the increase in explosion pressure and explosion intensity index is greater than that of the flame speed.Under the combined action of hydrogen addition and double obstacles,the flame contact speed can increase by up to 176.51%,and the maximum speed can increase by up to 316.40%.The double obstacles cause the pressure in the upstream region to rise first and then fall,and the pressure oscillation in the downstream region is obvious.After hydrogen addition,compared with the obstacle-free environment,the maximum explosion pressure in the pipeline can increase by up to 1280.9%,and the maximum explosion intensity index can increase to 167.65 times.In the layout engineering projects of constraint facilities,flexible obstacles with a smaller blockage ratio should be preferred to effectively mitigate the consequences of explosion hazards.关键词
气体燃爆/双重障碍物/火焰速度/爆炸压力/爆炸强度指数Key words
gas explosion/dual obstacles/flame speed/explosion pressure/explosion intensity index分类
数理科学引用本文复制引用
徐阳,李冕,李元兵,龙凤英..双重异性障碍物下掺氢甲烷的燃爆压升效应[J].高压物理学报,2025,39(5):76-84,9.基金项目
中国高校产学研创新基金-新一代信息技术创新项目(2021ITA08007) （2021ITA08007）
重庆市职业教育教学改革研究项目(Z2241166) （Z2241166）
