Experimental and numerical study on flame propagation behaviors in coal dust explosions

2014 ◽  
Vol 266 ◽  
pp. 456-462 ◽  
Author(s):  
Weiguo Cao ◽  
Wei Gao ◽  
Yuhuai Peng ◽  
Jiyuan Liang ◽  
Feng Pan ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Numerical Study ◽  
Coal Dust ◽  
Dust Explosions

Effect of turbulence intensity on flame propagation and extinction limits of methane/coal dust explosions

Energy ◽  
2022 ◽  
Vol 239 ◽  
pp. 122246
Author(s):  
Haipeng Jiang ◽  
Mingshu Bi ◽  
Zehua Gao ◽  
Zongling Zhang ◽  
Wei Gao
Keyword(s):  
Flame Propagation ◽  
Turbulence Intensity ◽  
Coal Dust ◽  
Dust Explosions

Numerical study of pressure and composition influence on laminar flame propagation in nitrogen-diluted H2-O2 mixtures

2020 ◽  
Vol 65 (6) ◽  
pp. 529-537
Author(s):  
Domnina RAZUS ◽  
◽  
Maria MITU ◽  
Venera GIURCAN ◽  
Codina MOVILEANU ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Laminar Flame ◽  
Numerical Study

SYSTEM APPROACH TO ANALYSIS OF THE REASONS FOR METHANE EXPLOSIONS AND COAL DUST ON RUSSIAN MINES

2020 ◽  
Author(s):  
Виктория Владимировна Смирнякова ◽  
Валерий Витальевич Смирняков ◽  
Федор Александрович Орлов
Keyword(s):  
Statistical Methods ◽  
System Approach ◽  
Coal Dust ◽  
Technical Analysis ◽  
Analysis Methods ◽  
Dust Explosions ◽  
Comparative Results

Авторами приведены статистические данные об авариях, связанных со взрывами газа и пыли на горных предприятиях России. Показаны сравнительные результаты оценки причин аварийных ситуаций, проведенных статистическими методами и методами технического анализа. The authors provide statistics on accidents associated with gas and dust explosions at mining enterprises in Russia. Comparative results of the assessment of the emergencies causes conducted by statistical methods and technical analysis methods are shown.

Numerical Simulation of Premixed Propane/Air Flame Propagation Using a Dynamically Thickened Flame Approach

2013 ◽  
Vol 444-445 ◽  
pp. 1574-1578 ◽  
Author(s):  
Hua Hua Xiao ◽  
Zhan Li Mao ◽  
Wei Guang An ◽  
Qing Song Wang ◽  
Jin Hua Sun
Keyword(s):  
Numerical Simulation ◽  
Flame Propagation ◽  
Numerical Study ◽  
Vortex Motion ◽  
Combustion Process ◽  
Single Step ◽  
Premixed Combustion ◽  
Premixed Flame ◽  
Flame Surface ◽  
Arrhenius Kinetics

A numerical study of premixed propane/air flame propagation in a closed duct is presented. A dynamically thickened flame (TF) method is applied to model the premixed combustion. The reaction of propane in air is taken into account using a single-step global Arrhenius kinetics. It is shown that the premixed flame undergoes four stages of dynamics in the propagation. The formation of tulip flame phenomenon is observed. The pressure during the combustion process grows exponentially at the finger-shape flame stage and then slows down until the formation of tulip shape. After tulip formation the pressure increases quickly again with the increase of the flame surface area. The vortex motion behind the flame front advects the flame into tulip shape. The study indicates that the TF model is quite reliable for the investigation of premixed propane/air flame propagation.

Coal dust flames: A review and development of a model for flame propagation

1979 ◽  
Vol 5 (1) ◽  
pp. 31-71 ◽  
Author(s):  
John L. Krazinski ◽  
Richard O. Buckius ◽  
Herman Krier
Keyword(s):  
Flame Propagation ◽  
Coal Dust
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