Flames

CONDOR – Applications

The columns labelled G & W are from Gaydon and Wolfhard (1970) Flames: Their structure, radiation, and temperature, 3rd edition, Chapman and Hall, Ltd., London, p. 304. The results that Gaydon and Wolfhard give for CH₄ + 2O₂ are from Sachse and Bartholomé (1949 Z. Electrochem. 53, 183). Gayden and Wolfhard note that the OH mole fraction appears to be too high, and the results from CONDOR show this to be the case. The C₂H₂ + air flame is calculated for a stoichiometric mixture of C₂H₂ + O₂ with the O₂/N₂ ratio fixed at that of dry air (20.946 % / 78.084 % = 0.268).

Values of calculated temperature and composition of burnt gases for some typical flames at atmospheric pressure
Fuel + oxidizer	H2 + 1/2 O2	H2 + NO	CH4 + 2 O2	C2H2 + air	C8H18 + 12 1/2 O2	CO + 1/2 O2	CO + N2O
	G&W	CONDOR	G&W	CONDOR	G&W	CONDOR	G&W	CONDOR	G&W	CONDOR	G&W	CONDOR	G&W	CONDOR
Temp. (K)	3083	3113	3010	2523	3082	2973	2898
H2O	0.57	.576	0.35	0.360	0.37	0.414	0.07	0.0710	0.26	0.2911	—	—	—	—
CO2	—	—	—	—	0.12	0.124	0.12	0.1190	0.14	0.1540	0.46	0.4579	0.25	0.2468
CO	—	—	—	—	0.15	0.149	0.04	0.0392	0.22	0.2148	0.35	0.3484	0.20	0.1982
O2	0.05	0.0513	0.04	0.037	0.07	0.081	0.02	0.0158	0.09	0.1001	0.15	0.1540	0.08	0.07814
H2	0.16	0.1514	0.12	0.123	0.07	0.068	0.00	3.77×10-3	0.05	0.0546	—	—	—	—
OH	0.10	0.1085	0.08	0.084	0.14	0.088	0.01	6.98×10-3	0.14	0.0911	—	—	—	—
H	0.08	0.0788	0.08	0.077	0.05	0.0426	0.00	1.71×10-3	0.05	0.0472	—	—	—	—
O	0.04	0.0338	0.04	0.0316	0.03	0.033	0.00	2.04×10-3	0.05	0.0471	0.04	0.0405	0.02	0.0220
NO	—	—	0.02	0.014	—	—	0.01	6.64×10-3	—	—	—	—	0.02	0.0198
N2	—	—	0.27	0.274	—	—	0.73	0.7339	—	—	—	—	0.43	0.435

Values of calculated temperature and composition of burnt H2 + Cl2 at atmospheric pressure. Values are for a stoichiometric mixture.
Fuel + Oxidizer	H2 + Cl2
	G & W	CONDOR
Temp. (K)	2503
H2	0.04	0.0379
H	1×10-2	4.96×10-3
HCl	0.87	0.8595
Cl	0.08	0.0794
Cl2	6×10-4	5.34×10-4

Chemistry in Sulfur-Bearing Flames

Chemistry in an H2S-O2-N2 Flame 1355 K, 75 mmHg (0.099 atm)
	Mole Fractions
Gas	CONDOR	Observed
N2	0.759	0.765
O2	0.101	0.100
SO2	0.069	0.066
H2O	0.069	0.069
H2	1.4×10-7	0
H2S	5.9×10-17	0
The observed values are from Figure 1 of E.L. Merryman and A. Levy (1971) Proceedings of the 2nd International Ckean Air Congress, pp. 361-370.

Chemistry in a CH3SH-O2-N2 Flame 1780 K, 75 mmHg (0.099 atm)
	Mole Fractions
Gas	CONDOR	Observed
N2	0.702	0.704
H2O	0.109	0.112
O2	0.076	0.076
SO2	0.055	0.056
CO2	0.055	0.052
CO	1.0×10-4	0
The observed values are from Figure 3 of Merryman and Levy (1971).