Table 1. Initial Conditions for Simulation.

sample	CH4 (%)	O2 (%)	N2 (%)	CO (%)	φ
1	7	19.53	73.47	0	0.72
2	7	19.32	72.68	1	0.75
3	7	18.48	69.52	5	0.89
4	7	17.43	65.57	10	1.09
5	12	18.48	69.52	0	1.30
6	12	18.27	68.73	1	1.34
7	12	17.43	65.57	5	1.52
8	12	16.38	61.62	10	1.77