摘要
对两种不同碳氢比例的多元组分进行爆轰不稳定性分析。在D=80 mm圆管中进行爆轰实验,分析多元组分的爆轰速度变化特性和胞格结构变化特性。分别从三波点轨迹间距、螺距和化学反应进程角度分析氢分压对多元组分爆轰不稳定性的影响,发现多元组分#1的爆轰速度与氢气预混气类似,虽有波动但总体较为平稳,始终稳定在0.95VCJ以上;多元组分#2的爆轰速度与甲烷预混气类似,波动幅度较大。从胞格结构特性角度分析,发现爆轰螺旋头数的变化趋势与速度变化趋势相似。三种不稳定性分析方法均得到多元组分#1的稳定性比多元组分#2的稳定性大。研究结果有助于整体把握多元组分的爆轰传播机理。
The detonation instability of two multi-component components with different C/H ratios is analyzed.Detonation experiments were carried out in a D=80 mm tube to analyze the characteristics of detonation velocity and cell structure changes of the multi-component components.The influence of hydrogen partial pressure on the instability of multi-component detonation was analyzed from the angle of three-wave point trajectory spacing,pitch and chemical reaction process.It is found that the detonation velocity of multi-component#1 is similar to that of hydrogen premixed gas,although it fluctuates,it is generally stable,and is always stable above 0.95VCJ.The detonation velocity of multi-component#2 is similar to that of methane premixed gas,and the fluctuation range is larger.From the perspective of cell structure characteristics,it is found that the variation trend of the number of detonation helical heads is similar to that of the velocity.The stability of component#1 is greater than that of component#2.The results are helpful to grasp the detonation propagation mechanism of multi-component.
作者
赵焕娟
包颖昕
于康
刘婧
钱新明
ZHAO Huanjuan;BAO Yingxin;YU Kang;LIU Jing;QIAN Xinming(College of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory of Chemical Safety,SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Qingdao 266100,Shandong,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)
出处
《化工学报》
EI
CSCD
北大核心
2024年第S01期339-348,共10页
CIESC Journal
基金
国家重点研发计划项目(2022YFC30063)
化学品安全国家重点实验室开放项目(SKLCS-2024023)。
关键词
多元组分
爆轰
不稳定性
氢
甲烷
反应动力学
multi-component
detonation
instability
hydrogen
methane
reaction kinetics
