DBPapers
DOI:10.5593/SGEM2013/BA1.V1/S03.045

NUMERICAL ANALYSIS OF THE IGNITION OF AIR-METHANE EXPLOSIVE MIXTURES RELATED TO UNDERGROUND MINING ATMOSPHERES

N. I. Vlasin, C. Lupu, E. Ghicioi, E. Cozma, V. Arad
Monday 5 August 2013 by Libadmin2013

References: 13th SGEM GeoConference on Science and Technologies In Geology, Exploration and Mining, www.sgem.org, SGEM2013 Conference Proceedings, ISBN 978-954-91818-7-6 / ISSN 1314-2704, June 16-22, 2013, Vol. 1, 563 - 570 pp

ABSTRACT

Modern computerized techniques regarding the numerical modelling of combustions are
essential tools, both for engineering and for specialized research. However, the
capabilities and limitations of numerical simulations have to be understood, gaining
experience in theory and modelling of combustions being an imperative factor in
avoiding errors with negative impact on the economy and on the occupational safety.
The major evolution of the numerical computation of combustions in the few last years
is based on the development of methods and tools for studying the unsteady reactive
flows and is mostly due to the energy and aerospace industries. However, most of these
numerical analysis techniques focus on low speed combustions, the modelling of the
detonations requiring special treatment.
A numerical model used in the computational simulation of fast combustions of gaseous
environments assumes (but not strictly required) that it contains a sub-model for
transferring the energy released by the ignition source towards the fuel fraction of the
mixture and the activation of the burning process of the explosive volume. This paper
work relates to a mathematical model focusing on the ignition moment and space of the
fast burning of an explosive air-methane mixture which is often encountered in
underground coal mining units.

Keywords: CFD, combustion, ignition, methane, explosive