A numerical simulation of methane-air mixture explosion under normal and elevated initial temperatures
- 10.2991/icaees-15.2015.196How to use a DOI?
- Gas explosion, methane-air mixture, explosion temperature, initial temperature, flame propagation
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.
- © 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/).
Cite this article
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 -