A numerical simulation of methane-air mixture explosion under normal and elevated initial temperatures

DOI

10.2991/icaees-15.2015.196How to use a DOI?

Keywords

Gas explosion, methane-air mixture, explosion temperature, initial temperature, flame propagation

Abstract

Study of the methane-air explosion mechanism is of great important for the safety utilization of the coal bed methane and safety production of coal mine. The methane-air explosion reactions were numerical simulated in a closed spherical 20 dm3 vessel with the ignition electrode at the center. The simulation results show that the main areas of premixed gas are the burned zone, unburned zone and preheat zone, and the reactions take place in the preheat zone. The flame spreads to the wall with the reaction goes on. Higher initial temperature accelerates the reaction rate and the flame propagation velocity. When the initial temperature increases, the temperature of burned zone is raised more than the initial temperature, and the explosion temperature of methane-air mixture also increases.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Na Gao
PY  - 2015/07
DA  - 2015/07
TI  - A numerical simulation of methane-air mixture explosion under normal and elevated initial temperatures
BT  - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
PB  - Atlantis Press
SP  - 1062
EP  - 1066
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaees-15.2015.196
DO  - 10.2991/icaees-15.2015.196
ID  - Gao2015/07
ER  -