Experimental Investigation of Flame Propagation and Explosion Properties of Premixed Gases N2O/C2H4/CO2

被引：0
|
作者：
Zeng X.-M. [1 ]
Zhang Y.-G. [2 ]
Jiang R.-P. [3 ]
Li Z.-P. [3 ]
Xu S. [1 ,4 ]
Li Y.-Y. [1 ]
Liu D.-B. [1 ]
机构：
[1] School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing
[2] Xuzhou Public Security Bureau, Xuzhou, 221000, Jiangsu
[3] Beijing Institute of Aerospace Testing Technology, Beijing
[4] National Quality Supervision and Inspection Center for Industrial Explosive Materials, Nanjing
来源：
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2018年 / 41卷 / 05期
关键词：
Combustion; Deflagration to detonation: detonation wave; Flame propagation; N[!sub]2[!/sub]O-based propellant; N[!sub]2[!/sub]O/C[!sub]2[!/sub]H[!sub]4[!/sub]/CO[!sub]2[!/sub; Nitrous oxide; Premixed gas;
D O I：
10.14077/j.issn.1007-7812.2018.05.014
中图分类号：
学科分类号：
摘要：
To study the flame propagation and explosion characteristics of premixed gases N2O/C2H4/CO2, the organic glass tube device with a spiral accelerating ring, length of 200cm and inner diameter of 1.5cm was used to conduct the combustion and explosion experiments of premixed gases by means of resistance wire ignition. The pressure sensors were used to measure the explosion pressure and detonation velocity and high-speed camera was used to measure the flame speed during combustion. The theoretical detonation velocity and theoretical detonation pressure of premixed gas were calculated by C-J theory. Results show that premixed gas rapidly burns in the combustion tube and the flame has a symmetrical Tulip structure, the maximum flame speed is 2235.2m/s. Except at 10cm from ignition, the pressure of other seven sensors increases suddenly and all of them present shock wave, in which, the maximum peak pressure at 100cm is 4.66MPa.and the maximum velocity of shock wave is 2247m/s. The theoretical detonation velocity of C-J is 2366.75m/s and the theoretical detonation pressure is 4.26MPa, the deviations of the maximum flame speed and maximum shock wave velocity with theoretical detonation velocity of C-J are 5.54% and 5.1%, respectively. The experimental results are basically consistent with the theoretical values. © 2018, Editorial Board of Journal of Explosives & Propellants. All right reserved.
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页码：501 / 505
页数：4
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