安全、健康和环境2024，Vol.24Issue(8)：41-47,7.DOI:10.3969/j.issn.1672-7932.2024.08.007
微细通道内火焰传播及淬熄过程研究
Study on Flame Propagation and Quenching Process in Microchannels
郑金磊1
作者信息
- 1. 化学品安全全国重点实验室,山东青岛 266104||中石化安全工程研究院有限公司,山东青岛 266104
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摘要
Abstract
In order to study the flame propagation and quenching process in the micro channel of the flame arrester element,a numerical model of flame propa-gation in a flat slit channel was established based on Fluent. Comparing the simulation results with the ex-perimental values,it was found that the maximum er-ror between the simulation results and the experimen-tal values was only 6.5％,and the accuracy of the numerical calculation model and the reliability of the simulation results were both high. Extracting the tem-perature change data of the flame in the micro chan-nel showed that the flame gradually stretches and e-ventually forms a "pointed" shape in the micro chan-nel,while the propagation speed first increased and then decreased. By analyzing the concentration distri-bution of OH radicals,it can be seen that the con-centration distribution of OH radicals also tended to increase first and then decrease. Secondly,by analy-zing the quenching process of the flame,it can be seen that the inlet flame speed and pore height were important factors that affect the quenching length,but the impact of temperature changes on the quenching length was relatively low.关键词
火焰传播/冷壁效应/自由基/微细通道/淬熄长度Key words
flame propagation/cold wall effect/free radicals/microchannels/quenching length分类
能源科技引用本文复制引用
郑金磊..微细通道内火焰传播及淬熄过程研究[J].安全、健康和环境,2024,24(8):41-47,7.
