A Detailed Numerical Study of NOx Kinetics in Counterflow Methane Diffusion Flames: Effects of Fuel-Side versus Oxidizer-Side Dilution

Table 2

Main reactions involved in NO formation (more information can be found in the GRI-Mech 2.11 mechanism [24]).

Reaction no.	Reaction steps	Reaction no.	Reaction steps
R178	N + NO => N2 + O	R179	N + O2 ≤ NO + O
R180	N + OH = NO + H	R182	N2O + O ≤ 2NO
R183	N2O + H = N2 + OH	R185	N2O(+M) ≤ N2 + O(+M)
R186	HO2 + NO = NO2 + OH	R187	NO + O + M = NO2 + M
R189	NO2 + H = NO + OH	R190	NH + O = NO + H
R191	NH + H = N + H2	R192	NH + OH = HNO + H
R193	NH + OH = N + H2O	R194	NH + O2 = HNO + O
R195	NH + O2 = NO + OH	R197	NH + H2O = HNO + H2
R199	NH + NO = N2O + H	R201	NH2 + O = H + HNO
R202	NH2 + H = NH + H2	R203	NH2 + OH = NH + H2O
R204	NNH = N2 + H	R205	NNH + M = N2 + H + M
R206	NNH + O2 = HO2 + N2	R207	NNH + O = OH + N2
R208	NNH + O = NH + NO	R209	NNH + H = H2 + N2
R210	NNH + OH = H2O + N2	R212	H + NO + M = HNO + M
R213	HNO + O = NO + OH	R214	HNO + H = H2 + NO
R215	HNO + OH = NO + H2O	R216	HNO + O2 = HO2 + NO
R217	CN + O = CO + N	R218	CN + OH = NCO + H
R219	CN + H2O = HCN + OH	R220	CN + O2 = NCO + O
R221	CN + H2 = HCN + H	R223	NCO + H = NH + CO
R231	HCN + O = NCO + H	R232	HCN + O = NH + CO
R234	HCN + OH = HOCN + H	R235	HCN + OH = HNCO + H
R236	HCN + OH = NH2 + CO	R240	CH + N2 = HCN + N
R246	CH + NO = HCN + O	R249	CH2 + NO = H + HNCO
R250	CH2 + NO = OH + HCN	R251	CH2 + NO = H + HCNO
R255	CH3 + NO = HCN + H2O	R265	HNCO + H = NH2 + CO
R270	HCNO + H = H + HNCO	R272	HCNO + H = NH2 + CO
R273	HOCN + H = H + HNCO	R274	HCCO + NO = HCNO + CO