[1]李玉艳①,王红松②,蒋榕培③,等.N2O-C2H4预混气体火焰的传播特性[J].爆破器材,2019,48(06):33-38.[doi:10.3969/j.issn.1001-8352.2019.06.007]
　LI Yuyan,WANG Hongsong,JIANG Rongpei,et al.Flame Propagation Characteristics of Premixed N2O and C2H4[J].EXPLOSIVE MATERIALS,2019,48(06):33-38.[doi:10.3969/j.issn.1001-8352.2019.06.007]
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N2O-C2H4预混气体火焰的传播特性()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
48
期数:
2019年06
页码:
33-38
栏目:
基础理论
出版日期:
2019-12-09

文章信息/Info

Title:
Flame Propagation Characteristics of Premixed N2O and C2H4
文章编号:
5358
作者:
李玉艳①; 王红松②; 蒋榕培③; 李智鹏③; 朱辛育①; 徐森①; 潘峰①; 解立峰①
①南京理工大学化工学院(江苏南京，210094)
②南京海关危险货物与包装检测中心（江苏常州，213022）
③北京航天实验技术研究所（北京，100074）
Author(s):
LI Yuyan①;  WANG Hongsong②;  JIANG Rongpei③;  LI Zhipeng③;  ZHU Xinyu①;  XU Sen①;  PAN Feng①;  XIE Lifeng①
① School of Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094)
② Nanjing Customs Testing Center for Dangerous Goods and Packaging (Jiangsu Changzhou,213022)
③ Beijing Insitute of Aerospace Testing Technology (Beijing, 100074)
关键词:
预混气体; 实验研究; 数值模拟; N2O-C2H4
Keywords:
premixed gas;  experimental study;  numerical simulation;  N2O-C2H4
分类号:
X932；O643.2
DOI:
10.3969/j.issn.1001-8352.2019.06.007
文献标志码:
A
摘要:
运用标准k-ε模型，对N2O-C2H4预混气体在水平半封闭管道内火焰传播过程进行了数值模拟，得到了火焰锋面结构、传播速度、出口压力和燃烧区的气流速度随时间的变化规律。研究结果表明，管道内预混火焰传播过程分为3个阶段：点火初期的平面火焰传播阶段、Tulip火焰传播阶段和指形火焰传播阶段；火焰传播速度呈指数增长，管道出口处压力和气流速度均呈现出先增大后减小的趋势。同时，采用高速摄影系统、压力传感器、有机玻璃管等装置对预混气体的火焰加速进程和压力演变过程进行了验证，实验结果与数值模拟结果一致。
Abstract:
Flame propagation of premixed N2O-C2H4 in a horizontal semi-closed tube was numerically simulated by using the standard k-ε model. Time dependence of flame front structure, propagation velocity, outlet pressure, and flow speed in combustion zone was obtained. The results show that the process of premixed flame propagation in tube could be divided into three stages, which are plane flame propagation stage, tulip flame propagation stage and finger flame propagation stage. Flame acceleration presents the exponential trend, and pressure at the vent of the tube and flow speed of the premixed mixture first increase and then decline. At the same time, high speed photographic system, pressure sensor, and PMMA tube were used to study on the flame speed and pressure, which agree with the simulated results.

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备注/Memo

备注/Memo:
收稿日期：2019-05-14
基金项目：国防科技创新特区项目第一作者：李玉艳（1985－），女，博士研究生，主要从事推进剂安全性能相关研究。E-mail: lyy.piao@163.com
通信作者：潘峰（1971－），男，副教授，主要从事含能材料相关研究。E-mail: pfhycc@163.com
更新日期/Last Update: 2019-12-04