文献类型：期刊文献

英文题名：Instability and characteristic regimes of hydrogen flame propagating through disordered wire meshes

作者：Yuan, Shuaishuai[1];Yu, Jiahui[2];Wang, Lei[3];Shen, Xiaobo[2];Yu, Xinhai[1];Tu, Shan-Tung[1];Xue, Dong[4]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Risk Assessment & C, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Hefei 230031, Peoples R China;[4]SUFA Technol Ind Co Ltd, Suzhou 215129, Peoples R China

年份：2026

卷号：283

外文期刊名：COMBUSTION AND FLAME

收录：;EI(收录号：20254319362856);WOS:【SCI-EXPANDED(收录号:WOS:001606302300005)】；

基金：This study was financially supported by the National Natural Science Foundation of China (Grant No. 22393954) .

语种：英文

外文关键词：Wire mesh; Hydrogen flame; Hydrogen autoignition; Explosion suppression; Deflagration to detonation transition

摘要：Experiments were performed in a closed duct to observe the effects of wire mesh on premixed hydrogen/air flame propagation under three variables: porosity, length- diameter ratio and initial pressure. Four modes of flame propagation in the downstream duct after passing through the wire mesh are defined: oscillatory flame propagation, sustained slow flame propagation, autoignition at the duct end, and flame quenching. The wire mesh exhibits dual effects of suppression and promotion on flame propagation, governed by the synergistic interaction between porosity and length-diameter ratio. The wire mesh with 85 % porosity or the length-diameter ratio of 2 shows a critical turning point characteristic between suppressing and promoting. Specifically, the low porosity of 75 % + high length-diameter ratio of 3 and the high porosity of 90 % + low length-diameter ratio of 1 demonstrates effective suppression. In contrast, the wire mesh with 75 % porosity + length-diameter ratio of 1 or 90 % porosity + length-diameter ratio of 3 tends to accelerate flame propagation and even drive the flame toward a detonation state. Furthermore, when the post-wire-mesh flame velocity meets the critical thresholds-maximum velocity (V-max)> 450 m/s, mid-length velocity (V-(L/2)) > 320 m/s, and average velocity (V-average) > 380 m/s-the unburned mixture at the duct end will trigger autoignition.