摘要
文章研究不同灵敏度的2H_(2)-O_(2)-nAr火焰在光滑管道下游的爆轰起爆特性。使用平行放置于管道顶部的压电压力传感器记录爆炸压力,并基于此计算平均速度;同时采用烟迹示踪技术记录爆轰起爆过程的胞格演变规律。通过上述2种方法获得爆轰起爆距离,使爆轰的起爆能够可靠、准确地定位;并根据爆燃到爆轰转变过程的化学动力学与特性分析对Silvestrini公式和Saif公式进行修正,从而确定初始点火位置与爆轰起爆距离之间的经验相关性。
This paper reported the initiation characteristics of detonation of 2H_(2)-O_(2)-nAr Ar flames with different sensitivities downstream of a smooth channel.Piezoelectric pressure sensors were flushed-mounted on the top wall of the channel to record pressure time histories,based on which combustion wave velocities were calculated.Soot foil technique was also used to record the evolution of the cellular pattern during the detonation initiation process.And the detonation initiation distance was obtained by these two methods,so that the initiation can be reliably and accurately located.In addition,the Silvestrini and Saif formulas were modified based on analyzing the chemical kinetics and characteristics of the deflagration-to-detonation transition(DDT)process.Thus,the empirical correlation between the initiation position and the detonation initiation distance can be defined.
作者
吕兆文
李权
刘虎
王昌建
魏臻
LYU Zhaowen;LI Quan;LIU Hu;WANG Changjian;WEI Zhen(School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China;Anhui International Joint Research Center on Hydrogen Safety,Hefei 230009,China;Hefei Gocom Information Technology Co.,Ltd.,Hefei 230088,China;Engineering Research Center of Safety Critical Industrial Measurement and Control Technology of Ministry of Education,Hefei 230601,China;School of Computer Science and Information Engineering,Hefei University of Technology,Hefei 230601,China)
出处
《合肥工业大学学报(自然科学版)》
北大核心
2025年第6期817-822,共6页
Journal of Hefei University of Technology:Natural Science
基金
国家自然科学基金资助项目(12102117)
安徽省重点研究与开发计划资助项目(2022h11020013)
合肥工业大学学术新人提升计划B资助项目(JZ2022HGTB0267)。
关键词
氢能
爆燃转爆轰
胞格结构
临界条件
爆轰起爆距离
hydrogen
deflagration-to-detonation transition(DDT)
cellular structure
critical condition
detonation initiation distance
