CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview

Santosh Kumar Ray; Niroj Kumar Mohalik; Asfar Mobin Khan; Debashish Mishra; Nikhil Kumar Varma; Jai Krishna Pandey; Pradeep Kumar Singh

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CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview

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Mine disasters occur predominantly due to methane or coal dust explosion or a combination of both.Among the top ten worst coal mine disasters in India, nine are due to coal dust explosion. The current paper describes a general overview of the parameters causing dispersion leading to coal dust explosion,and computational fluid dynamics(CFD) simulation study to observe the effects of particle size on dispersion in Indian coal mines. Turbulent kinetic energy(TKE) and velocity vector path of dust-air mixture and dust-free air were simulated to understand their effects on coal dust dispersion. The TKE contours and velocity vector paths for dust-free air were uniform and symmetrical due to resistance-free path available. The TKE contours and velocity vector paths for dust-air mixture shows the asymmetrical distribution of contours, due to entrainment of air with dust particles. Vortices were observed in velocity vector paths which gradually diminish on increment of time sequence. These vortices are dead centres where velocity and coal dust particles concentration are both zero.

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《矿业科学技术学报：英文版》 |2020年第3期|P.321-327|共7页
作者
Santosh Kumar Ray; Niroj Kumar Mohalik; Asfar Mobin Khan; Debashish Mishra; Nikhil Kumar Varma; Jai Krishna Pandey; Pradeep Kumar Singh;
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作者单位

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

CSIR-Central Institute of Mining and Fuel Research Dhanbad 826001 India;

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原文格式 PDF
正文语种 chi
中图分类流体力学;
关键词
Coal dust explosibility; CFD; 20l explosion chamber; Dispersion; Turbulent kinetic energy;

机译：煤尘爆炸性;CFD;20l爆炸室;分散性;湍动能;

CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview

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