CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview
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 explo...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-05-01
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| Series: | International Journal of Mining Science and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268619301958 |
| _version_ | 1818239028204404736 |
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| author | Santosh Kumar Ray Niroj Kumar Mohalik Asfar Mobin Khan Debashish Mishra Nikhil Kumar Varma Jai Krishna Pandey Pradeep Kumar Singh |
| author_facet | Santosh Kumar Ray Niroj Kumar Mohalik Asfar Mobin Khan Debashish Mishra Nikhil Kumar Varma Jai Krishna Pandey Pradeep Kumar Singh |
| author_sort | Santosh Kumar Ray |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-12T12:51:02Z |
| format | Article |
| id | doaj.art-dbff63a2d83b4f1184d315bad1d3d5f8 |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-12-12T12:51:02Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-dbff63a2d83b4f1184d315bad1d3d5f82022-12-22T00:24:00ZengElsevierInternational Journal of Mining Science and Technology2095-26862020-05-01303321327CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overviewSantosh Kumar Ray0Niroj Kumar Mohalik1Asfar Mobin Khan2Debashish Mishra3Nikhil Kumar Varma4Jai Krishna Pandey5Pradeep Kumar Singh6Corresponding author.; CSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaCSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaCSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaCSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaCSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaCSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaCSIR-Central Institute of Mining and Fuel Research, Dhanbad 826001, IndiaMine 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.http://www.sciencedirect.com/science/article/pii/S2095268619301958Coal dust explosibilityCFD20l explosion chamberDispersionTurbulent kinetic energy |
| spellingShingle | Santosh Kumar Ray Niroj Kumar Mohalik Asfar Mobin Khan Debashish Mishra Nikhil Kumar Varma Jai Krishna Pandey Pradeep Kumar Singh CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview International Journal of Mining Science and Technology Coal dust explosibility CFD 20l explosion chamber Dispersion Turbulent kinetic energy |
| title | CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview |
| title_full | CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview |
| title_fullStr | CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview |
| title_full_unstemmed | CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview |
| title_short | CFD modeling to study the effect of particle size on dispersion in 20l explosion chamber: An overview |
| title_sort | cfd modeling to study the effect of particle size on dispersion in 20l explosion chamber an overview |
| topic | Coal dust explosibility CFD 20l explosion chamber Dispersion Turbulent kinetic energy |
| url | http://www.sciencedirect.com/science/article/pii/S2095268619301958 |
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