Effect of low-concentration coal dust on gas explosion propagation law

2020 ◽  
Vol 367 ◽  
pp. 243-252 ◽  
Author(s):  
Chaowei Guo ◽  
Hao Shao ◽  
Shuguang Jiang ◽  
Yajun Wang ◽  
Kai Wang ◽  
...  
Keyword(s):  
Coal Dust ◽  
Gas Explosion ◽  
Low Concentration ◽  
Propagation Law

scholarly journals Propagation law and analysis of gas explosion in bend duct

2009 ◽  
Vol 1 (1) ◽  
pp. 316-321 ◽  
Author(s):  
Ye Qing ◽  
Lin Bai-quan ◽  
Jia Zhen-zhen ◽  
Zhu Chuan-jie
Keyword(s):  
Gas Explosion ◽  
Propagation Law

scholarly journals Experimental study of low‐concentration gas explosion in large‐scale pipeline

2020 ◽  
Vol 8 (6) ◽  
pp. 2129-2140 ◽  
Author(s):  
Lei Li ◽  
Zhigang Zhang ◽  
Peng Liu ◽  
Kequan Wang ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Large Scale ◽  
Gas Explosion ◽  
Low Concentration

scholarly journals Research on Ignition Energy Characteristics and Explosion Propagation Law of Coal Dust Cloud under Different Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Tianqi Liu ◽  
Ruiheng Jia ◽  
Ruicheng Sun ◽  
Weiye Tian ◽  
Ning Wang ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Ignition Temperature ◽  
Coal Dust ◽  
Dust Cloud ◽  
Propagation Distance ◽  
Experimental Result ◽  
Ignition Energy ◽  
Minimum Ignition Energy ◽  
Energy Characteristics ◽  
Propagation Law

To study the ignition energy characteristics and explosion propagation law of coal dust cloud, a kind of coal dust cloud is studied through experiment and numerical simulation under different conditions. The result indicated that ignition delay time and dust spray pressure have obvious effects on the minimum ignition energy of coal dust cloud. CFD theory is used to simulate the explosion flame propagation. It is found that the simulation error of flame propagation distance is acceptable and the simulation result is consistent with the experimental result. When the spray pressure is 0.06 MPa, the flame propagation distance is the farthest, indicating that the turbulence of coal dust cloud is the largest at this condition. As the ignition temperature increases, the flame propagation distance continues to increase, proving that ignition temperature has an obvious effect on the flame propagation process of coal dust cloud explosion.

Numerical Analysis of Shock Wave Propagation Law of Internal Gas Explosion

2011 ◽  
Vol 105-107 ◽  
pp. 299-302
Author(s):  
Xiu Hua Zhang ◽  
Yan Yan Wu
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Initial Energy ◽  
Shock Wave Propagation ◽  
Coupling Method ◽  
Frame Structure ◽  
Gas Explosion ◽  
Fluid Structure ◽  
Explosion Pressure ◽  
Propagation Law

The purpose of this paper is to research on shock wave propagation law of internal gas explosion. The multi-material Eulerian and Lagrangian coupling algorithm was adopt. Using ANSYS/LS-DYNA dynamic analysis software to build frame structure, air and gas explosion models. Multiple ALE elements for simulating air and gas explosion material the analysis of blast shock wave propagation in a three-story steel frame structure and the characteristics of explosion pressure using fluid-structure coupling method are carried out. The conclusions show that fluid-structure coupling method can well simulated shock wave propagation of internal gas explosion, and the pressure peak of blast shock wave increased with the increasing of the blast air initial energy. Locality is the characteristic of explosion pressure in sealed space, and the pressure pass weakly when it propagates in solid.

Study on the propagation law of gas explosion in the space based on the goaf characteristic of coal mine

2020 ◽  
Vol 127 ◽  
pp. 104693 ◽  
Author(s):  
Ke Gao ◽  
Sheng-nan Li ◽  
Rong Han ◽  
Run-zhi Li ◽  
Zi-meng Liu ◽  
...  
Keyword(s):  
Coal Mine ◽  
Gas Explosion ◽  
Propagation Law

The propagation law and analysis of gas explosion in U type duct

2008 ◽  
Vol 14 (2) ◽  
pp. 252-256
Author(s):  
-Qing Ye ◽  
Bai-quan Lin ◽  
Zhen-zhen Jia ◽  
Tao Feng ◽  
Hai-qiao Wang
Keyword(s):  
Gas Explosion ◽  
Propagation Law

Coal Dust and Gas Explosion Suppression by Barriers

2008 ◽  
pp. 138-138-14 ◽  
Author(s):  
D Ng ◽  
M Sapko ◽  
A Furno ◽  
R Pro
Keyword(s):  
Coal Dust ◽  
Gas Explosion ◽  
Explosion Suppression
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