Coupling oscillation characteristics of premixed gas explosion flame and pressure

SHI Gaolong; WEN Xiaoping; WANG Fahui; PEI Bei; PAN Rongkun; LIU Zhichao; CHEN Wei

doi:10.11949/0438-1157.20190070

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Coupling oscillation characteristics of premixed gas explosion flame and pressure

Process safety | 更新时间：2026-07-24

- Coupling oscillation characteristics of premixed gas explosion flame and pressure
- CIESC Journal Vol. 70, Issue 7, Pages: 2811-2818(2019)
- 作者机构：
  
  1.河南理工大学机械与动力工程学院，河南焦作 454003
  2.河南理工大学安全科学与工程学院，河南焦作 454003
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190070
  CLC： TD 712
- Received：22 January 2019，
  
  Revised：2019-04-19，
  
  Online First：24 July 2026，
  
  Published：05 July 2019
- 稿件说明：
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时高龙, 温小萍, 王发辉, 裴蓓, 潘荣锟, 刘志超, 陈卫. 预混气体爆炸火焰与压力的耦合振荡特性[J]. 化工学报, 2019, 70(7): 2811-2818

SHI Gaolong, WEN Xiaoping, WANG Fahui, PEI Bei, PAN Rongkun, LIU Zhichao, CHEN Wei. Coupling oscillation characteristics of premixed gas explosion flame and pressure[J]. CIESC Journal, 2019, 70(7): 2811-2818
时高龙, 温小萍, 王发辉, 裴蓓, 潘荣锟, 刘志超, 陈卫. 预混气体爆炸火焰与压力的耦合振荡特性[J]. 化工学报, 2019, 70(7): 2811-2818 DOI： 10.11949/0438-1157.20190070.

SHI Gaolong, WEN Xiaoping, WANG Fahui, PEI Bei, PAN Rongkun, LIU Zhichao, CHEN Wei. Coupling oscillation characteristics of premixed gas explosion flame and pressure[J]. CIESC Journal, 2019, 70(7): 2811-2818 DOI： 10.11949/0438-1157.20190070.

摘要

为研究预混气体爆炸火焰和压力的耦合振荡特性，自行搭建了尺寸为80 mm×80 mm×1000 mm透明有机玻璃爆炸管道实验平台。实验结果表明，在氧气浓度

和泄爆面积比

变化的条件下，会对CH

预混气体爆炸火焰与压力的耦合振荡产生影响。当氧气浓度

从0.21到0.40变化时，火焰传播时间逐渐缩短，火焰结构发生动态演变，火焰后期的振荡现象愈加明显，同时测到的压力曲线在后期也存在振荡增强现象；当泄爆面积比

从0.125到1.000变化时，

=0.21工况下

=0.125和

=0.250两个工况与其他工况的压力曲线有所不同，出现了一个更高的压力峰值，

=0.30工况下

=0.125也出现了新的压力峰值，

=0.30和

=0.40两种工况的压力峰值都逐渐减小，压力后期的振荡幅值与泄爆面积比有关。

Abstract

To study the coupling oscillation characteristics of the explosion flame and pressure of premixed gas

a transparent plexiglass explosive pipeline experimental platform with dimensions of 80 mm×80 mm×1000 mm was built. The results show that the coupling oscillation of CH

premixed gas explosion flame and pressure will be affected under the condition that the oxygen concentration

and the detonation area ratio

change. When the oxygen concentration

changes from 0.21 to 0.40

the flame propagation time decreases gradually

the flame structure evolves dynamically

the oscillation phenomenon in the later flame is more obvious

and the oscillation enhancement phenomenon also exists in the later stage of the measured pressure curve. When the detonation area changes from 0.125 to 1.000

the pressure curves of

=0.125 and

=0.250 under

=0.21 conditions are different from those of other working conditions

a higher pressure peak is observed

and new pressure peaks appear in

=0.125 under

=0.30 conditions

and the peak pressure of

=0.30 and

=0.40 two kinds of working conditions decreases gradually

the oscillation amplitude in the later stage of pressure is related to the explosion area ratio.

关键词

Keywords

references

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